GOP Debate: What Do Candidates Have to Do?

John Berman has a cheat sheet on what to expect in the next Republican debate.
2:46 | 12/15/11

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Transcript for GOP Debate: What Do Candidates Have to Do?
Internal politics out of your voice your vote at around holding nothing back has -- to take down front running his fingers now he's calling and zany. Just nineteen days before the first votes and hours before the next high stakes debate in Iowa that is tonight. And ABC's John Berman -- he wouldn't cheat cheat on what to expect good morning -- you know George you -- to big gay because the attacks are getting bigger. This is the last debate before the Iowa Caucuses and therefore may be the last best chance for these candidates to impress voters in this crucial state. Call it. Mission in principle. -- -- -- -- Grants all of their final Iowa -- station mixed. Yanks new. Even nasty things a wealthy man a very wealthy man but if you have a half a million dollar purchase from -- Tiffany's you're not an. Take a middle class American. It's personal and maybe working out. Romney sources tell ABC news they see signs at Iowa polls that -- support is softening. The three point one million dollars in negative ads from supporters make -- difference. Especially the notion Romney is pushing and they Gingrich -- he doesn't have the temperament to lead -- Zinni is great in a campaign. It's great on and talk radio but in terms of a president when he later. And a leader needs -- to be someone who can bring Americans together. -- -- keep cool tried to stay above the Frey like he did protesters in Iowa I'm. And try to -- all over them and hope that I. Don't let attacks -- -- did he told Sean Hannity. -- or to rob and his consultants. -- successfully -- -- in exactly the wrong direction. Also keep the -- on Ron Paul who's been up in polls in the all new grill it's about serial -- As for mission Paul -- smiling especially when Mitt Romney gushes about you order things about. Ron Paul that I always amazes me is likened to a debate like this the only signs I see other Ron Paul people out there. As the others mission and remember me. Michelle Bachmann Rick Santorum and Rick Perry were all at an anti abortion event overnight in Perry has launched a huge Iowa bus tour. Hammering the values the. I happen to believe America is ready for someone who's got the values that I own shares. Now the conservative national review has published a sort of anti endorsement of Newt Gingrich citing what they call his impulsive this in weakness -- half -- ideas and today political report in response to this and all the attacks -- Mitt Romney. New will launch a new positive ad in Iowa he'll -- Others seem to be focused on attacks rather than moving the country forward but the question is are those attacks -- laying down we'll find out coming days absolutely.

This transcript has been automatically generated and may not be 100% accurate.

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