The direct and intentional actions of the Republican party in California are in large part responsible for its in ability to break say 44-45% in most CA elections.
No it's the national party's fault for obsession over Jesus and what he would think about gay marriage and abortion. The state party, led by the Governator, understands how much the fundies are screwing his party.
Which is why a Rep. is guaranteed 47+% in CA next time when Reps. abandon the (cultural) populist act (thought not entirely).