The most challenging candidate for Mitt Romney to defeat over the next eighteen months will be all the versions of Mitt Romney that have come before.

In the nearly twenty years since his failed 1994 campaign for Senate in Massachusetts, Mr. Romney has flipped from a moderate pro-choice Republican to a conservative anti-choice Republican. 

But that's not the only flip-flop Mitt's going to have to explain. His opinions on the Bush Tax Cuts, healthcare, teacher's unions - even Ronald Reagan - have changed over time.

Click on the "quiz" picture below to see the many different faces of Mitt Romney.