Gallup: 79% of those in the "tea party movement" identify themselves as Republicans. 62% consider themselves conservative Republicans.
So much for the notion that this tea party hoo-ha is bi- or non-partisan; it's merely rebranding: "...the presence of a new political force that is not called Republican and is not tied to George W. Bush has given the GOP a glorious opportunity to remake its image, at a time when trust in the party is very low. Some liberals deride the Tea Party as a new bottle for old Republican wine. But rebranding works...."