Let's turn now to white house correspondent jake tapper on the plane trips and the duel for the biggest turnouts in the most crucial space. This is the first stop on our 48-hour fly around campaign... See More
Let's turn now to white house correspondent jake tapper on the plane trips and the duel for the biggest turnouts in the most crucial space. This is the first stop on our 48-hour fly around campaign marathon extravaganza. We're going to pull an all-nighter. No sleep. Reporter: From washington, d.C. To davenport, iowa, to denver, colorado, next he heads to los angeles to tape jay leno following at night rally with katy perry. Logging more than 4500 flight miles total in just one day. Romney has been trying to convince voters in the same basic eight battleground states that he has momentomentum. These debates have supercharged our campaign. No question about it. More and more enthusiasm. But so far the momentum that romney has described hasn't been enough to trump the simple math of this race. The popular vote may be a dead heat but the electoral map is in the president's favor. Take a look. If the president picks up just three battlegrounds, ohio, iowa and wisconsin, he wins. What's more, he's also ahead in battle grounds of iowa and new hampshire. Now, look at romney, these are the ones that he's expected to keep. He's ahead in colorado, nevada. If he wins all four, it's not enough. Obama still wins the electoral college. One key point on this, diane, while president obama is ahead in many of these battle ground state polls he's still not crossed the 50% threshold. Remains as much undecided voters that either candidate can win.
This transcript has been automatically generated and may not be 100% accurate.