The GOP and RNC 'leadership' run RINOs (like GW, McClown and Mittens) because they stupidly believe it's the only way to get elected.
When Conservatism Is a Second Language http://spectator.org/archives/2012/11/08/when-conservatism-is-a-secon
“...nominating a moderate who is said to "move to the center," "can attract women," "get the youth vote" and "get the minority vote." The strategy has failed repeatedly for some 80 years. Say again…80 years!!!!!”