WASHINGTON - The Iowa caucuses are set to take place tomorrow and it could be anyone's win.

A Des Moines Register poll predicts Mitt Romney will get 24 percent of the vote, slightly ahead of Congressman Ron Paul at 22 percent. Sen. Rick Santorum stands at 15 percent. Former House Speaker Newt Gingrich blames negative campaign commercials from the Romney camp for his slip to fourth in the polls.