Abortion issue not dominant to Republicans

People are always saying that the Christian Right is preoccupied with the
abortion issue, but CNN reports:

Republican presidential hopeful Mitt Romney narrowly won a straw poll of mostly Christian conservative voters at the Family Research Council's Values Voters Summit held this weekend in the nation's capital.

Romney is not even a mainstream Christian and he has a pro-abortion record. Meanwhile, the candidate with the rock-solid anti-abortion record is John McCain, and he only scored 1%. If the abortion issue were really so important, then McCain would be the leader.