Carson campaign director and communications director quits campaign

[yankeesfan]

If Carson's campaign falls apart completely, it's a pretty big story. He still has about 10% support, both nationally and in Iowa. Presumably the remaining Carson diehards are evangelicals skeptical of Cruz or some such combination.

That means they're not gonna switch to Cruz. But to whom?

I don't think that's accurate.  It's early enough in the race that it seems possible they haven't heard enough of Cruz yet.  They know Carson because of his prior presence in Evangelical culture.