All of this, of course, unfolding in an election year. American voters have been watching president obama and republican presidential candidate mitt romney. How they're handling this, how they're... See More
All of this, of course, unfolding in an election year. American voters have been watching president obama and republican presidential candidate mitt romney. How they're handling this, how they're reacting to it. And tonight, for governor romney, new numbers he's facing, as well, in key battleground states of florida, ohio and virginia. We can show you the map tonight. And in all of those three key battlegrounds, president obama is now, in fact, pulling ahead. This is key. We want to turn to jon karl to tell us more about what's happening tonight. Jon? Good evening. Reporter: Good evening, david. It looks like president obama got a real boost out of his convention. And now, mitt romney is scrambling to catch up. For the romneys this morning, it was all laughs, as they taped an interview to air on tuesday's "live with kelly and michael." What does mitt wear to bed? Really? I didn't write the question. I promise. I didn't write the question. Yes, he did. I hear the best answer is "as little as possible." Reporter: But when it comes to the campaign, it looks bad for romney. Worse than at any time since he clinched the republican nomination in may. First, those new polls in ohio, virginia and florida. They're the three biggest battleground states and romney is tanking in all of them. And the big picture is even worse for romney. Take a look at this. The eight states abc news lists this week as tossups. Romney is trailing in every single one of them, according to real clear politics, a website that averages all recent public polls. Why is he trailing? Romney is losing his biggest advantage. On the economy, voters in ohio now say obama would do a better job. He may have hoped to gain ground after lashing out at the president, but the move backfired. Today, romney struck a different tone. And I'd ask that you might each place your hand over your heart in recognition of the bloodshed for freedom by them and by our other sons and daughters who have lost their lives in the cause of america. Reporter: No political attacks, just tribute for the four americans killed in libya. Jonathan karl, abc news, washington.
This transcript has been automatically generated and may not be 100% accurate.