EDIT: To add a little more substance. I think the incoherence stems from the fact that the current conservative alliance is formed from approximately 3 distinct groups, with different priorities. You have the religious folks who care about abortion, same-sex marriage, drug laws, etc... And then you have the blue collar group that cares more about immigration, guns, etc.. And then you have the pro-business group which mostly cares about taxes and deregulation. From the outside looking in, it shouldn't be surprising that it's hard to empathize with the 'conservative' world view, because the external manifestations of that worldview are often very contradictory (i.e. why would a group that supports small-government also support the drug war, etc...)