Since when have Republicans begged for the support of libertarians? You give yourself too much credit. I say, take a hike...no one needs your vote.
Maybe it's time that those who have been voting for Republicans in the hope of smaller, less obtrusive government, end of the welfare state, lower taxes, less corrupution, and immigration control that works find another party to vote for. It's obvious that the Republicans don't stand for those things and based on your assertion, they don't want to.