GOP primaries

An InsiderAdvantage poll finds Romney with the support of 23 percent of likely caucus-goers, ahead of Paul at 22 percent.

Santorum’s events have swelled past capacity as both voters and media have flocked to see the former Pennsylvania senator speak.

GOP hopeful Newt Gingrich downplayed his expectations for the Iowa caucuses on Monday.

Google and the Iowa Republican will post unofficial results as they become available on Tuesday night.

There is growing belief in Santorum’s campaign that Tuesday's caucuses are coming down to a fight against Romney.

"I think I'm getting a real strong send-off," Romney said of his recent efforts to court Iowa caucus-goers.

"This race is a long way from being won," Perry said a day ahead of the important Iowa caucuses. 

"Mitt Romney learned a lesson, that you can't ignore Iowa too long," said Branstad of Santorum's surge. 

Rep. Michele Bachmann said concerns conservatives wouldn’t rally behind one candidate was a “big issue” ahead of the Iowa caucuses.

A new report calls the ever-changing nomination fight the "most volatile for the GOP since the advent of polling."