unique look at his country. next on pbs newshour weekend. >> pbs newshour weekend is made possible by: lewis b. and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. campaign 2016 is in the fly-by phase before primaries and caucuses in a dozen states two days from now, including seven southern states. today, democrat hillary clinton campaigned in tennessee and arkansa

race. all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by:

checking last night's republican presidential debate. next on pbs newshour weekend. >> pbs newshour weekend is made possible by: cullman.. and louise hirschfeld bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, william brangham. >> brangham: good evening and thanks for joining us. the body of supreme court justice antonin scalia is expected to be flown home to virginia over the next 48 hours following his sudden death yesterday in texas. to honor scalia, president obama ordered american flags to fly half-staff today at the supreme court in washington and at federal bui

. next on pbs newshour weekend. >> pbs newshour weekend is made possible by: lewis b. and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, alison stewart. >> stewart: good evening and thanks for joining us. the 2016 race for the white house is entering a new, faster- paced phase, with roughly 90% of the delegates in the nominating process still up for grabs. after winning yesterday's first- in-the south primary in south carolina and sweeping all 50 republican convention delegates, businessman donald trump is in the lead. trump and his rivals are now focusing on the dozen states holding primaries and caucuses on march 1, known as "super tuesday," w

tweets. next on pbs newshour weekend. >> pbs newshour weekend is made possible by: lewis b. and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, megan thompson. >> thompson: good evening and thanks for joining us. a day after agreeing to reach a cease-fire in syria within a week, world leaders met today to end the five-year civil war that has fueled europe's migrant crisis and may have cost half a million lives. diplomats from the united states, russia, turkey, saudi arabia, and iran are among those attending an annual security conferenc

and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> lincoln financial, committed to helping you take charge of your financial future. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> sreenivasan: milwaukee is the center of the democratic political universe tonight. the candidates meet for a pbs newshour presidential debate, and how they perform on stage could influence the next key contests. our political director lisa desjardins is in milwaukee. >> reporter: that's right. newshour staff is finishing up the rehearsals on our debate stage for what is expected to be a powerful and maybe even pivotal debate between bernie sanders and hillary clinton, but the democrats do not have a monopoly on intensity and to

scalia. and in our signature segment, what happens when walmart leaves town? next on pbs newshour weekend. >> pbs newshour weekend is made possible by: corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, alison stewart. >> stewart: good evening, and thanks for joining us. we now have the results from two presidential nominating contests in south carolina and nevada. we begin with the republicans in south carolina where businessman donald trump is the projected winners, the early returns show the candidates finishing in the two tiers. trump is in the top tier and marco rubio and ted cruz is in second tier. south carolina officials election officials say there was a strong, possibly record voter turnout for the primary. the state is important for republicans

. >> woodruff: all that and more, on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial: committed to helping you take charge of your financial future. >> supporting social entrepreneurs and their solutions to the world's most pressing problems-- skollfoundation.org. >> the ford foundation. working with visionaries on the frontlines of social change worldwide. >> and with the ongoing support of these institutions: and friends of the newshour. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the democratic presidential rivals moved on from milwaukee today, fresh off their pbs newshour debate. but the arguments they had on-stage, continued at long distance. >> as i pointed out last night, he has called the president weak, a disappointment -- >> woodruff: hillary clinton returned to south carolina this afternoon and to a line of attack she used

without recognizing it on a daily basis. >> sreenivasan: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> here's to lifelong friendships and partnerships of all meaningful kinds. here's to love that lasts year-in, year-out. for more than five generations, lincoln financial has helped people plan for the future because this is what you do for people you love. lincoln financial, you're in charge. ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> sreenivasan: the first two presidential contests of the year are in the books, and on both sides, it still looks wide open. tuesday's stunning results shook up the field again, and left a coup

tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> bnsf railway. >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the months of campaigning and the endless tv ads have all come to a close today in new hampshire. this primary day means voters finally have to decide who wins, and the losers have to decide whether to go on. political director lisa desjardins is in new hampshire, where she watched the day's events. >> reporter: the campaign buses rolled across the granite state one last time, and candidates made one last push to sway possible supporters. but many of those voters admitted they were last-minute deciders: >> i just got out of my car and said, "oh my god who am i going to vote for? who am i going to vote for?" >> reporter: for others, it was more excitement than angst in their first experience with the "first in the nation" primary. >> hey, we got a first time voter! >>

and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take charge of your life and become you're own chief life officer. >> supporting social entrepreneurs and their solutions to the world's most pressing problems-- skollfoundation.org. >> the ford foundation. working with visionaries on the frontlines of social change worldwide. >> and with the ongoing support of these institutions: and friends of the newshour. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: it's the final weekend before the new hampshire primary and the eyes of the political world are focused on the granite state. candidates are dashing across the state to win over as many votes as possible. political director lisa desjardins, who is in manchester, reports that when the two remaining democrats took center stage together, they hea

, and i am ready to say that adrian vlok has changed. >> ifill: all that, and more, on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: lincoln financial. you're in charge. ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: turkey's capital city is alive with fear and anger tonight, after a car bomb killed at least 28 people and wounded 61. we have a report on the blast in central ankara, from juliet bremner of independent television news. >> reporter: moments after an explosion was heard across the turkish capital, flames leapt into the night sky. the bomb had hit a convoy of military buses which had been taking soldiers home from their barracks. in

. >> woodruff: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> and the william and flora hewlett foundation, helping people build immeasurably better lives. >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: it is primary eve in what is, for now, the center of the political universe: new hampshire. political director lisa desjardins is in new hampshire. she kicks off our coverage of the candidates' high-stakes sprint to the finish. >> good to see you guys! >> reporter: they were in manchester, chatting with diners. >> let me, let me tell you, sir... >> reporter: ...and in plaistow, taking questions from veterans. republicans and democrats, favorites and long-shots: nearly all the candidates were going all out, seeking out undecideds and trying to turn their rivals' supporters into their

. >> ifill: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> lincoln financial-- you're in charge. ♪ ♪ years. moving our economy for 160 bnsf, the engine that connects us. >> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: president obama today insisted he will send a resistant senate a supreme court nominee. senate republican leaders are insisting they'll hold no hearings or vote-- and will, instead, wait until a new president takes office next year. but in a oval office meeting with the king of jordan, the president said he's going to his job, and senators should do theirs. >> i recognize the politics are hard for them, because the easier thing to do is to give in to the most extreme voices wit

, crying, "oh god." >> woodruff: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> bnsf railway. >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: they're still counting the actual votes in new hampshire, but the races have been called. on the democratic side, the associated press projects vermont senator bernie sanders easily defeated hillary clinton in this first primary of 2016. she had won by a whisker in iowa. among the republicans: donald trump scored big, with john kasich a surprising second. jeb bush, ted cruz-- the g.o.p. winner in iowa, and marco rubio are fighting for third place. political director lisa desjardins is in new hampshire, where she watched the candidates and voters today. >> reporter: the campaign buses rolled across the granite state one last time, and candidates made one last push to sway possible supporters. but many of those voters

, february 11th. we are hours away from a showdown. a pbs democratic debate that will air tonight. it is clear where hillary clinton and bernie sanders are drawing the line. minority voters. bernie sanders hit the late show with stephen colbert. he brought up racial oppression and if the revolution he is calling for could end in violence. >> those who make peaceful revolution possible make violent revolution inevitable. if your answer is not the answer, is violent revolution inevitable? >> i certainly hope not. the goal of the campaign is look at the civil rights movement and women's moment and gay moment, when people come together, we can accomplish enormous things. >> the debate in milwaukee at 9:00 p.m. joe johns with the latest. >> reporter: john and christine, this morning, the focus is turning to milwaukee and debate there tonight with bernie sanders and hillary clinton. it is so important because the former secretary of state lost momentum in new hampshire. she is trying to make changes to her campaign to appeal to younger voters. bernie sanders will try to build on fund raising s

. >> ifill: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: lincoln financial, committed to helping you take charge of your financial future. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. supporting innovation and education, democratic engagement, and the advancement of international peace and security. at carnegie.org. and with the ongoing support of >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: it's been another day of hard campaigning, and hard words, in new hampshire, where primary day is just five days off. as democrats prepared to debate tonight, the top republican contenders took new shots at each other. political director lisa desjardins reports. >> cruz fired off a broadside. >> donald trump is very rattled right now. you know, he said, "how st

anything. >> ifill: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> bnsf railway. >> lincoln financial-- committed to helping you take charge of your financial future. >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: president obama vowed today to nominate someone "indisputably" qualified to replace the late supreme court justice antonin scalia. senate republicans are insisting he forego a nomination fight in this election year. but after a southeast asian summit in california, mr. obama said he means to do his job, and senators should do theirs. >> there are a lot of republican senators who are gonna be under a lot of pressure from various special interests and various constituencies and many of their voters to not let any nominee go through no matter who in nominate. but that's not how the system's supposed to work. that's not how our democracy's sup

." she died today at age 89. all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take charge of your financial future. >> supporting social entrepreneurs and their solutions to the world's most pressing problems-- skollfoundation.org. >> the ford foundation. working with visionaries on the frontlines of social change worldwide. >> and with the ongoing support of these institutions: and friends of the newshour. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: thousands of people-- among them, president and mrs. obama-- paid final respects today to supreme court justice antonin scalia. he died last saturday at the age of 79, and lay in repose today at the building where he had worked since 1986. hari sreenivasan has our report. >> sreenivasan: it was a day of solemn scenes at the land's highest cou

pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take charge of your financial future. >> and the william and flora hewlett foundation, helping people build immeasurably better lives. >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: confirmation today that the u.s. and russia have agreed on at least a pause in the syrian war. the formal announcement came from washington and moscow, but it left unclear just how extensive the cease-fire might be. meanwhile syria's president bashar al-assad called a parliamentary election for april 13. we'll have a full report later in the program. >> ifill: in the day's other news, authorities in michigan say the man accused in the kalamazoo killings has admitted he did it. jason dalton faced a judge via video link from jai

analyze the week's news. all that and more, on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take charge of your financial future. >> supporting social entrepreneurs and their solutions to the world's most pressing problems-- skollfoundation.org. >> the ford foundation. working with visionaries on the frontlines of social change worldwide. >> and with the ongoing support of these institutions: and friends of the newshour. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the republican presidential race took another unexpected plot twist today-- with donald trump collecting a major endorsement from a former rival. it came just days before the all-important "super tuesday" contests. >> i am proud to be here to endorse donald trump for president of the united states. >> woodruff: in a single stroke, new jersey

democratic debate sponsored by pbs airs tonight on cnn and on your local pbs station live at 9:00 p.m. >>> the republican presidential field is smaller by two this morning. new jersey governor chris christie and business executive carly fiorina dropped out of the race or suspended their campaigns. now more republicans have quit the race than remain. today, john kasich and ted cruz and marco rubio and ben carson will be in south carolina. that is the scene of the next primary. following the big win in new hampshire, rivals have nine days to try to bring donald trump down. >> donald trump, who is an extraordinary politician, apparently, and great actor and enterta entertainer. it is entertaining until you get insulted. not if you are a disabled person. that is a sign of weakness or disparage women or hispanics. >> we cannot nominate a candidate who has the same health care plan of socialized medicine as bernie sanders. >> i think we need to remember that 75% of the voters yesterday chose -- oh, 65% chose someone other than donald trump. the question is how long will it take before we go

made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by newshour productions, llc captioned by media access group at wgbh access.wgbh.org how i wish you were he

people think will happen in the future. >> woodruff: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> lincoln financial-- committed to helping you take charge of your financial future. >> bnsf railway. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> carnegie corporation of new york. supporting innovations in education, democratic engagement, and the advancement of international peace and security. at carnegie.org. >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: it may be unprecedented, and it lit up the presidential campaign today: a sitting pope crossed verbal swords with a candidate for president of the united states, just ahead of a crucial primary. political director lisa desjardins has our report. >> reporter: this is not you

tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: >> lincoln financial-- committed to helping you take charge of your financial future. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> carnegie corporation of new york. supporting innovations in education, democratic engagement, and the advancement of international peace and security. at carnegie.org. >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> sreenivasan: the political drama over the u.s. supreme court vacancy took a new twist today. the republican governor of nevada, brian sandoval, withdrew his name from consideration. sandoval said in a statement: "the notion of being considered for a seat on the highest court in the land is beyond humbling." but he gave no reason for his decision. senate republicans say t

. blumenauer: thank you, mr. speaker. last night, frontline on pbs had a compelling documentary on the opioid and heroin epidemic. we are now seeing politicians diving in. governors across the country sounding the alarm. it's being featured by presidential candidates in both parties. president obama's budget has some very good suggestions, highlighting tools to reduce drug overuse -- overdose, evidence-based prevention programs, prescription drug monitoring, and prescription takeback events. there are a variety of things that are going in the right direction. yet, it's a little frustrating for me that the simplest, cheapest, safest solution to help these troubled people is not embraced. medical marijuana. actually, the public is largely there. for the last 20 years, the tide

tonight in the pbs news hour democratic presidential debate here on cnn as well as pbs stations at 9:00 eastern. that's it for "the lead." i'm jake tapper. thanks for watching. >>> happening now, breaking news. debate night. hillary clinton and bernie sanders face off for the first time since new hampshire. sanders is riding high after his stunning victory, but clinton's new strategy is to go right after him. the fireworks just a few hours from now. >>> toned down trump as other republicans step up their harsh rhetoric out there on the campaign trail, is donald trump trying out a kinder, gentler approach? and how long will that last? >>> and un-opposed. kim jong-un's inner circle gets smaller as the north korean dick tarlt executes his army chief. is he afraid of a coup? who's left to pose a real threat? i'm wolf blitzer. you're in "the situation room." >>> start with the breaking news. stakes couldn't be higher. you're looking at a picture of the debate hall in milwaukee, wisconsin, where just four hours from now hillary clinton and bernie sanders will have their first showdown sinc

to do and yet we have to commit ourselves to doing it. >> all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take charge of your financial future. >> and the william and flora hewlett foundation, helping people build immeasurably better lives. >> and with the ongoing support of these institutions: >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: it was no-holds-barred on the presidential campaign today, underscoring the all- important races tomorrow, on super tuesday. and as tensions flared, the republican race was thrown into uproar again. this is donald trump, barreling toward tomorrow's big voting day, with the wind at his back in almost all 13 of the super tuesday states. today, in southwestern virginia, the republican frontrunner boasted his campaign is on a nonstop roll. >> republic

. technically, midwest. this is milwaukee, wisconsin, site of a pbs news hour, democratic debate also airing right here on cnn. fresh off of his new hampshire landslide, bernie sanders is going to again face hillary clinton who has been under wraps since that thumping she got in new hampshire. sanders has not been under wraps, anything but, in fact. on abc's "the view" and cbs' "late show," bernie sanders talked shop, and cracked jokes and suggested his appeal to young voters comes down to two words. why not? >> why can't all people in this country have health care? why can't we make public colleges and universities tuition-free? why not? why do we have so much -- [ cheers and applause ] >> well, the answer is -- the answer is that it's expensive. it's a very expensive thing to do. the top 1% has a lot of influence with the government, and they're not just going to give it up. you know? >> well -- >> they're going to fight you tooth and nail. and i'll tell you how i know. i'm in the top 1%. [ laughter ] why do you think you can make this change? >> i think because we have reached a po

bernie sanders will face off tonight in milwaukee. the debate is hosted by pbs it will air on local pbs stations and cnn at 8 o'clock tonight. the next debate will not be until march 6th in flint, michigan. more than one-thousand fast-food workers will call for a higher minimum wage at tonight's debate. demonstrators staged rallies like this one in milwaukee two years ago, demanding a minimum wage of 15-dollars an hour. bernie sanders supports the 15- dollars-an-hour minimum wage. as for hillary clinton she says she would cap it at 12-dollars an hour. the minimum wage is currently at seven-dollars, 25 cents. the state department may release some of hillary clinton's e- mails this weekend. the department was supposed to release all of the emails last month but it asked for an extension. they are from the private server clinton used when she was secretary of state. under the new plan-- it would release 550 emails on saturday out of the aproximately 37-hundred that remain. about 85-percent of been released so far. while the democratic candidates get ready for tonight's debate the grand

the days of hidden experimentation are over. >> woodruff: all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> lincoln financial-- committed to helping you take >> and with the ongoing support of these institutions: and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: deadly attacks blasted hospitals and schools across northern syria today, killing nearly 50 civilians, many of them children. it signaled again there's no end in sight for the war, despite plans for a temporary cease- fire. activists blamed russian air strikes, and the white house condemned the attacks. we'll get a detailed account, later in the program. amid tensions across the middle east, saudi arabia today launched its largest war games ever. the drills involve 20 mostly arab and african countries. the saudis are already fighting shiite rebels in yeme

. >> this is the pbs newshour democratic debate in partnership with facebook. now live from milwaukee, gwen ifill and judy woodruff. (applause) >> thank you. >> thank you. >> woodruff: good evening, we're happy to welcome you to milwaukee for this democratic debate. we're especially pleased to thank our partners at facebook, who have helped us establish a vibrant conversation among undecided voters. tonight you'll hear some of their questions for the candidates. and you can follow along at home on the pbs newshour page on facebook. we also want to thank our hosts, the university of wisconsin, milwaukee, on whose campus we meet, here in the beautiful helen bader concert hall. >> ifill: we want to extend our warm thanks to milwaukee public radio and milwaukee public television, as well as all of our friends at the pbs member stations across the country tuning in tonight. this is the sixth time the democrats have met face to face. each time we learn more about them and the presidents they say they want to be. you know you're watching-- whether you're a democrat, a republican, or neither-