The battle for the Republican presidential nomination is shaping up to be a showdown between Newt Gingrich and former Massachusetts Gov. Mitt Romney.
The race has already seen many front-runners, but Gingrich believes his track record will give him staying power.
"Those guys were the new kids on the block and 'isn't this wonderful' and 'boy it'd be great if it worked out' - and we don't know anything about them," he said. "I'm the guy that's been around forever."
Huge crowds met the former House speaker on the campaign trail in Iowa. Voters there love his debate style and unrelenting attacks on President Barack Obama.
Gingrich has promised to challenge the president to seven three-hour Lincoln-Douglas style debates.
"If the president has not yet agreed, I will announce from that day forward for the rest of the campaign, the White House will be my scheduler," Gingrich said. "And wherever the president appears, I will appear four hours later."
Polls show Romney is likely to be Gingrich's biggest threat. Romney, however, has only been to Iowa four times.
Still, with just over one month remaining until the first caucus, Romney made a play for the Hawkeye State with a new television commercial.
"I spent my life in the private sector," Romney says in the ad. "I've competed with companies around the world."
Republican voters seem to view Gingrich as the anti-Romney -- something they've been desperately searching for. And Gingrich sounds confident the race is his to win.
"I'm going to be the nominee," he declared. "It's very hard not to look at the recent polls and think that the odds are very high I'm going to be the nominee."
Meanwhile, Herman Cain is the latest to fall from the top of the field.
He will make one last campaign stop Friday before meeting face to face with his wife to discuss allegations of a 13-year affair with another woman.
Cain is expected to make a decision on whether to continue his campaign by Monday.