Hmmm, a liberal professor - i.e., an "expert" - publicly stating that the Tea Party (which doesn't actually exist) will win unless moderate republicans can defeat them.
Hmmm, now what does that sound like?
It sounds like a liberal agit-prop mouthpiece trying to further foment divison and infighting within the republican party by goading moderates into attacking tea partiers with more gusto and goading tea partiers into more obstinately refusing to even consider anything the moderates might have to say, and goading tea partiers into favoring even more and more extreme candidates as a way of highlighting the supposed differences between themselves and the moderates.
Folks, if you take this person at face value, then you've been had.