Weigel doesn't see a GOP at war with itself:
In order for there to be a real split in the new GOP, something bigger than a fight for attention or some backbone-stiffening, there needs to be a disagreement on some issue big enough to distract the party from its mission. It needs to be a big enough distraction to make Republicans, Tea Partiers, libertarians, evangelicals, Bo Derek, and everyone else temporarily pause the war on Barack Obama's policies.
So far, nothing is playing that role.