Lack of fortitude? That suggests that they’d LIKE to be conservative, but are afraid of voters or the media or whomever, so they fold and vote like liberals. The reality is that they are mostly all died-in-the-wool, keptocratic, big-government, crony-socialist liberals who occasionally put on a little show to fool the masses into believing they are conservative. As Hugo Chavez said of George W Bush, “We are all socialists, now.”