The Wisconsin congressman has been one of the anti-abortion lobby's most dependable voices in Washington, D.C.. Last year, he worked with Akin on a bill stating "the life of each human being begins with fertilization… at which time every human being shall have all the legal and constitutional attributes and privileges of personhood."
Romney, who supported abortion rights during his time as governor in Massachusetts, has changed his position and earned the backing of groups like the Susan B. Anthony List, which calls his new commitment to the anti-abortion cause "concrete."
As for Ryan, being asked to square his views with Romney's is nothing new. He discussed the gap in their philosophies during a brief discussion aboard his campaign plane late in August.
"I'm proud of my record," Ryan said. "Mitt Romney is going to be president and the president sets policy. His policy is exceptions for rape, incest and life of the mother. I'm comfortable with it because it's a good step in the right direction."