. >> a new national poll shows hillary clinton ahead of bernie sanders by double digits with martin o'malley trailing behind but clinton could actually lose the first contest there in iowa. abc's liz kreutz reports from des moines. >> reporter: overnight in snowy iowa, the race heating up. >> i'm trying to win our vote. leave me alone here. >> reporter: the democratic presidential hopefuls facing voters in a cnn town hall. >> just to be clear, you are going to raise taxes to do this. >> yes, we will raise -- we will raise -- we will raise taxes, yes, we will, but also let us be clear, chris, we may raise taxes, but we are also going to eliminate private health insurance premiums for individuals and for business. >> reporter: he also didn't hold back when asked about his opponent. >> now, this calls for a standing up response. >> okay. >> what do i think? let me just giver you a couple of examples. i voted against the war in iraq. hillary clinton voted for the war in iraq. >> reporter: later hillary clinton animated, energetic confronted with questions over her honesty and her e-mails. >> i'v

o'malley have agreed to another debate before the new hampshire primary on february 9th. that's a reversal for clinton who originally tried to keep them at a minimum. now she says she's waiting for sanders to agree. abc's jonathan karl asked sanders what's up. >> i wanted more debates from day one. >> reporter: i know. >> gee, a couple of months ago the clinton people weren't interested. i wonder what has happened now that they want more debates? what do you think has changed? >> well, what's changed is that clinton used to be the clear front-runner. now sanders is surging. debates can be risky for anyone in the lead. so, stay tuned to this one. >>> a teacher has been arrested for providing material support to those three escapees from a southern california jail. nooshafarin ravaghi taught english as a second language at the jail. she's suspected of giving the inmates planning tools like google maps. authorities also released the photos of this van. it was stolen, and they say the escapees may be living in. >>> the four remaining militia members still at the oregon wildli

. >> martin o'malley. >> hillary clinton. >> all three democratic candidates taking part in the forum hosted by abc news' sister station fusion. on stage at different times answering rapid-fire questions. >> is it off brand for a democratic socialist to live in a mansion like the white house? [ laughter ] >> well, i would consider it more like public housing. [ laughter ] >> but it wasn't all laughs. the candidates laying out their plan for guns and immigration plus bernie sanders and hillary clinton taking aim at each other. >> have you noticed this lady, that she's been getting more aggressive with you? >> it could be that the inevitable candidate for the democratic nomination may not be so inevitable today. >> i have laid out specifically my tax plans, and my friend, senator sanders, has said that he will lay out his before the iowa caucus, and i and others will be anxious to see them. >> the candidates also taking shots at republican front-runner donald trump. >> who would have thought donald trump would be leading in of national polls? [ laughter ] i mean, for those of you who ev