It's down to the wire in Iowa -- and the AP's Mike Glover has some hints on what to watch for tomorrow night to gauge how things are going in the caucuses.

Determined not to be overshadowed by Iowa, Rudy Giuliani releases a striking new ad that's sure to cause some controversy:

In this ad, John McCain seems to be using the same "evil jihadi" footage:

"Ladies and gentlemen, Gov. Huckabee, mighty fine man and is a great Christian, is not a conservative, he's just not." - Rush Limbaugh, on his show today.

Limbaugh's comments might give Jay Leno something to talk about with the candidate tonight. Also appearing on the late-night show circuit is Hillary Clinton, who'll be on Letterman.

More Huckabee: Can a frontrunner, albeit barely, be an "underdog"?

We're No. 2! Fred Thompson said, with a laugh, he would be happy with a second-placy Iowa finish.

Mitt Romney, meanwhile, is hoping for something a little better.

But, via Marc Ambinder, Romney Iowa chairman Doug Gross admits that if 50% of Iowa turnout is evangelical "it would be very difficult for us to finish first in that kind of situation."

The Edwards campaign is trumpeting the endorsement of "30 Leading Economists."

They're all bums! Mike Bloomberg isn't too impressed with the current crop of candidates.