It is too late for the GOP. The GOP has bought into open borders, cheap labor and free trade. The GOP candidate will be an open borders, cheap labor, free trade candidate, someone like Tancredo can forget it, ain't gonna happen.
The GOP is retuning to it 1950's elitest country club roots, free nannies for the upper class, mean while the Democrats are returning to their labor roots. Who wins is a no brainer.