Yeah if Santorum had a chance of wrapping up the nomination, or if abortion was a hot button issue this election. Fact is neither are.
Edit: Looking at the USA Today exit poll Abortion as the top topic garnered only ELEVEN percent of the vote, the Federal Deficit garnered 26% of the vote, and the Economy got 54%. Santorum's voters overwhelmingly came for the abortion, while Romney got the deficit and economy.