How the President Changed in 4 Years

Even with Jay-Z and the Boss backing him on the eve of Election Day, Obama's re-election bid is tough
3:00 | 11/05/12

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Transcript for How the President Changed in 4 Years
Tonight, the sprint to the finish line with only 24 hours left in this presidential race, my co-anchors terry moran and bill weir on the trail with the candidates. We'll have their reports in a moment. But first, the other story dominating the news for the past week, hurricane sandy and the devastation left in its wake. And the desire to do something to help. So all day today, disney and abc have been raising money to help those who need it most. We kicked it off this morning with a telethon on "gma" ands of right now viewers tr eers contributed a staggering amount $15.3 million, which including $3 million from sam sung. Call the number on the screen. We hope you will. We turn to the election. Terry moran on the trail with president obama today and joins us from iowa. Good evening, terry. 11 cities in three days. Reporter: That's right, the final lap. And this is the final time barack obama will ever do this. This is his last political campaign and the last rally and so tonight this cold iowa air is thick with emotion and nostalgia and edged with a bit of anxiety about what will happen tomorrow. You talk to the obama people, they express kind of gritty, grim, even, confidence. They think they'll get it done. But they know this time so different from the last time. It's not about inspiration, it's about perspiration, all about hard work. Madison, wisconsin this morning, bright and crisp and obama crowd filling the streets about 18,000 of them. Sort of fired up. Sort of ready to go. I don't know. It's pretty early to be fired up. Reporter: Bruce springsteen came and sang. ♪ No retreat ♪ Reporter: And this time around for obama and his crowd the gritty courage, mournful determination in his song rings truer, perhaps. Incredible crowd and it's good to be back. Reporter: He has changed so much. He's in the fight of his life and he knows it and his hoarse voice told the tale. We have come too far to turn back no come too far to let our hearts grow faint. Now is the time to keep pushing forward. Reporter: Looblging at barack obama today on the last day of his last campaign, it is impossible not to think back. To what seemed a hinge of history. The change we need doesn't come from washington, change comes to washington. Reporter: The crowds were bigger, more raptured, more hopeful. For so many people it was magic. But it couldn't happen again. That's not how life works. This is real. This is politics. Listen, we know what change looks like, madison, and what he's selling ain't it. Giving more power back to the biggest banks, that's not change. Another $5 trillion tax cut that favors the wealthy is not change. Reporter: There are two keys to victory for obama this time around, first is dedication, he needs crowds not to so much fall in love with him again but to grip down and get out that vote and to do that he needs the young people, the american electorate of tomorrow. There are 39,000 students at the university of wisconsin and in this state they can register to vote up to election day. Why did you vote for him? Well, I'm gay, so that is a big pull for me. Romney is very anti-gay marriage and obama, since he came out and supported gay marriage last spring, that's one of the big things for me. Reporter: The other key for obama, well, it's victor schmidt and so many like him. I've been laid off three times in three years, basically. Reporter: Would seem like you're the perfect romney voter then. Never going to happen. Reporter: Why not? They just don't represent my values. Reporter: Across the country, white men like victor abandoned obama in droves but here in wisconsin and elsewhere in the midwest the president does better with these voters. For many it seems conservative attacks on the president that question his patriotism and even his american-ness just don't work as well. Against obama on the other side, they feel he's not a true blue enough american, you know what i mean? They keep saying that. Reporter: You don't buy that? What's a true blue american? Reporter: Obama went to columbus, ohio, this afternoon, jay-z joining bruce springsteen on the bill. But we drove across the farmland to iowa to catch up with the campaign in des moines. Here we go, crossing the mighty mississippi river from wisconsin, battleground state. Into iowa, battleground state, where it all began, politically for barack obama, which he needs to come through for him again this year. They were lining up to register and vote in dubuque, both sides looking for every single supporter. Scott didn't vote last time. But is coming out for romney. Felt like thiime needed to make my vote count. Things look like they'll be close, so time to make it happen. Reporter: You could decide the election. That's right. Reporter: The last rally of barack obama's historic political journey, the end of a long, hard and often ugly campaign on both sides, and the end of the obama era? Or the start of a new chapter, a new chance for him, for them, for ? So they've given us a souvenir to commemorate this, finish where we started. They hope they send him back to washington, what's that the people here hope and it all comes to whether that american electorate of tomorrow, younger, bit more diverse will come out in sufficient numbers to do the job.

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

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