I have been voting since Reagan's first term. His second election was the last time the GOP ran a candidate who was even remotely "conservative". (And Reagan was only very remotely a conservative. He was a New Deal Democrat, but he at least had the conservative patter down pat.) The notion that a party that continually nominates the likes of Romney, McCain, Doles and the two Bushes is "conservative" is laughable.
Conservatives have been trying to take over the GOP since Goldwater. That has been about 50 years. Five decades of fruitless struggle should be enough to convince people that the GOP is a hopeless case. It is well past time to abandon the GOP and build a real conservative party.