The Protestant vote always goes Republican. You're telling us that Protestants who traditionally vote Republican do so principally because of the Republican candidate's position on abortion?
Is that what you're calling the "pro-life vote"?
Or are you saying that a Protestant who votes Republican because he prefers lower taxes and smaller government is making "a pro-life vote"?
You think that social conservatives vote democrat? That is absurd.
Social liberals vote democrat, social conservatives vote republican, that is why Romney is causing problems with the republican Protestant base, (by the way, he will do better with Catholics).