GOP lost on every social issue - god, don't ask don't tell, abortion, gay marriage, pot....that was their bread and butter. The truth is Hillary and Obama are mostly neo-cons except for the aforementioned issues.
That's why Trump and Sanders have all this juice. Sanders promising the world and Trump promising revenge on Obama's policies...which to my thinking is the same as GW Bush in many cases outside of social issues.
So pick your poison.