Romney made the rounds at several house parties Tuesday, saying he remains positive that he'll come out on top.
Other polls show different results, including the CNN poll that puts Romney ahead of Huckabee.
Democratic presidential candidate Dennis Kucinich on Tuesday asked his supporters to make rival Barack Obama their second choice if he doesn't meet a cutoff point for voting in Iowa's caucuses. Kucinich, an Ohio congressman at the back of the pack of Democratic hopefuls, seemed to concede a loss in the caucuses. He said his recommendation was for "Iowa only."
Obama thanked Kucinich for the recommendation. "I have a lot of respect for Congressman Kucinich, and I'm honored that he has done this because we both believe deeply in the need for fundamental change," the Illinois senator said in a statement.
In the 2004 presidential campaign, Kucinich and former Sen. John Edwards agreed to encourage their supporters to back each other if they weren't viable. The pact was credited with boosting the vote for Edwards, who finished a surprise second.
This morning, the New York senator Hillary Clinton made her first campaign appearance of 2008, speaking to hundreds at the Gateway Hotel in Ames. It was one of her "Pick a President" events. Clinton says that America is ready for a change in its leadership.
Clinton and Obama were to air longer-than-usual, two-minute ads during Wednesday's evening news programs. Edwards bought a full-page ad in the Des Moines Register featuring a testimonial from a worker who was laid off from an Iowa Maytag plant. The worker also will appear in a one-minute TV ad for Edwards.
