Shifting gears now to the white ho race to the white house. President obama and mitt romney a dead heat. Romney keeps aggressively campaigning across multiball ground states this week. It's your... See More
Shifting gears now to the white ho race to the white house. President obama and mitt romney a dead heat. Romney keeps aggressively campaigning across multiball ground states this week. It's your voice, your vote. Abc's david kerley has more. Reporter: This is politics as contact sports. The only thing that I'm not going to do, though, is get into a middle of an argument between hawkeyes and huskers fans. On the first day of the college football season, paul ryan tailgated with his al ma mayer the and romney used a metaphor to attack president obama. 23 million people are out of look, or stopped looking for cook. If you have a coach, 0 to 23 million, you say it's time to get a new coach. Reporter: Whether the polls show it now romney was feeling a bounce after the convention in cincinnati. A long-standing ovation. Florida, they joined forces to campaign. Look, it's time for us to take responsibility for the course of america to get back on track. Reporter: Theresident zblsh hello, iowa! Reporter: Hit another battle ground state. And belittled the republican affair claiming that romney knows how to create jobs and won't share that secret with voters. It was a rerun. You might as well watched it on a black and white tv. There was a lot of talk about hard truths. And bold choices. But nobody actually bothered to tell you what they were. During the democratic convention, mitt romney will be in debate preparations. Preparing for that critical face-off. Very important this cycle. Thank you. Let's bring in george stephanopoulos. Great to see you, george. Historically, how long do post-convention bounces? These are very, very polls right now. Race is still as david said basically a tied. One of the things that we have seen many years the convention bounces have been going down as television viewership has gone down. Pay attention to the polls after the democratic convention. You said that he has to focus on the economy, economy, is that what we're going to hear about that during the debates? No question. He'll press mitt romney on his plans. He doesn't want this race to simply be about the obama record. He'll argue that the romney plans are going to hurt the middle class. And obama camp said that are feeling good about going into their convention this week, how do you think, you're talking to sources there. It's a dead heat. When they look at the battle ground states, they believe that the president, at least, has a relatively comfortable lead in the electoral college. We have three unemployment reports coming. Be sure to join george later on abc's "this week" when he goes one-on-one with white house senior adviser david plouffe and george and diane sawyer lead our live democratic convention in primetime starting at 10:00 eastern on tuesday night.
This transcript has been automatically generated and may not be 100% accurate.