Christie is really popular. That's made him a marked man when it comes to politics.
We break down the latest poll numbers in Iowa -- so you don't have to.
In his first big speech after the 2012 election, Ryan hinted this day might come.
Walker's position offers hints about the type of presidential candidate he'd be.
After easily winning reelection on Tuesday, Christie was in the spotlight for a different contest: the 2016 GOP nomination.
"Our job is not go into the states to take shine off people."
The party demands it, and the probable candidates are only too happy to give it to them.
A closer look at Romney's revealing vet of Christie as relayed in "Double Down."