Donald Trump is back in the lead in Iowa, but a new poll has a different Republican right on his heels.
FOX's Rachel Sutherland reports from Washington:
Quinnipiac University surveyed likely caucus-goers in Iowa and found Ted Cruz within two points of front-runner Donald Trump, 23 to 25%, respectively.
Cruz has surged since the attacks in Paris...
(Cruz) "We will have a commander-in-chief who stands up and says we will be defeat radical Islamic terror."
Ben Carson slipped to third place. Marco Rubio in fourth.
In Washington, Rachel Sutherland, FOX News.