Who exactly are these "moderates"? If you equate "moderate" with "Independent" - which admittedly is a bit of a stretch - you'll find that the Rasmussen Generic Congressional ballot has the GOP running better than 2 to 1 vs. the 'Rats among Independents.
I would imagine that most of these "moderates" have had it up to here with 'Rats who fancy themselves as "moderate" and vote the Reid-Pelosi line in Congress.
There are no moderates only insane left-wing Liberal useful idiots.