(CNN)-State of the Union is on the air, so here's a wrap up of what Candy and co. read this morning from Des Moines, Iowa.
And make sure to watch our interviews with Ron Paul, Rep. Steve King. Gov. Terry Branstad, and more!
Perhaps the last significant wild card before Tuesday is the potential endorsement of Iowa Rep. Steve King, who told RealClearPolitics in an interview just hours before the Register's poll was released that there was about a 50/50 chance he would get behind a candidate at the last minute.
"With big decisions, at some point your intellect is overcome by your instincts - at least mine is," King said. "If I make a bold decision in the next few days, it will be one of conviction, and I will be eager to advocate for that position and defend it against all critics, if I happen to have any, and I'm sure I will."
"There has never been this many undecided voters this late in any caucus campaign I've seen. It really is remarkable," said Tim Albrecht, spokesman for Republican Gov. Terry Branstad. "It's still a very volatile, wide-open race."
The poll, conducted Tuesday through Friday, shows support at 24 percent for Romney, the former governor of Massachusetts; 22 percent for Paul, a Texas congressman; and 15 percent for the surging Rick Santorum, a former U.S. senator from Pennsylvania.
But the four-day results don't reflect just how quickly momentum is shifting in a race that has remained highly fluid for months. If the final two days of polling are considered separately, Santorum rises to second place, with 21 percent, pushing Paul to third, at 18 percent. Romney remains the same, at 24 percent.
"I think we're the candidate that conservatives are starting to rally around. That's pretty clear from the poll," Santorum said. "We're the campaign with momentum. If conservatives want to stop Mitt Romney, than Rick Santorum is the train that's right at his heels."
He said conservatives are "very, very concerned about making sure Mitt Romney doesn't come out with a big win out of Iowa. And there's one candidate who's moving in and closing in."
Former front-runner Newt Gingrich pledged to take more aggressive approach to the barrage of negative ads that have sunk him the polls. "We haven't figured out how to deal with the ads that are dishonest without doing anything stupid ourselves," Mr. Gingrich told a town-hall audience at a Coca-Cola distributorship in Atlantic. He later told reporters, "We may go to a much more clear contrast, but we're not going to respond in kind."
"In terms of the president's relationship with Congress in 2012," Mr. Earnest said at a briefing, "the president is no longer tied to Washington, D.C." Winning a full-year extension of the cut in payroll taxes is the last "must-do" piece of legislation for the White House, he said.
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