One possible reason could be Fred Thompson's inclusion in the poll (he may take support away from Rudy).
Another possible reason for the bump may be McCain's recent trips to the states, aboard the Straight Talk Express.
As noted in my earlier post, Iowa and New Hampshire are even more important this year than ever ...
That's why, I'm heading to New Hampshire tomorrow -- to see for myself. (I'll be attending a few town hall meetings and reporting back on the response McCain is getting in the Granite State.)