Christie goes back to Iowa

Gov. Chris Christie makes another trip to Iowa this week.

This marks his fourth trip to campaign for Republican Gov. Terry Branstad, who has a huge lead in the polls.

The trips, though, may be more about Christie's presidential aspirations.

Iowa holds the nation's first primary, and voters have been cool to Christie.

Right now, just six percent of voters say that he is their first choice.

But, with Branstad likely an easy winner in November, look for him to try and boost Christie's campaign.