Akin has since apologized.
The Romney campaign repudiated Akin’s remarks shortly after they aired on Sunday -– and there’s nothing to connect Mitt Romney or Ryan to Akin’s bewildering statement about “legitimate rape.” The Romney campaign statement elaborated that a Romney-Ryan administration would allow abortions under the exceptional cases of rape, incest, or in instances of danger to the life of the mother.
On the presidential ticket, then, Romney’s policy trumps Ryan’s record.
Still, Ryan's and Akin's voting records on abortion-related issues are barely distinguishable. During his 14 years in Congress, Ryan has voted in perfect concert with the positions taken by National Right to Life Committee, according to the NRLC scorecard. That's 78 votes with NRL, and none against (he didn’t vote on three bills). In his House career, Akin voted with NRL 59 times and against it once (Akin was one of 25 Republicans joining 189 Democrats to nearly sink the Medicare Modernization Act in 2003. Here’s NRLC’s write up of the MMA vote.)
However, the two differ on one important matter: Ryan believes abortions could be an option in the case of danger to the mother, while Akin does not.