Tea Party Supporters Overlap Republican Base":
There is significant overlap between Americans who identify as supporters of the Tea Party movement and those who identify as conservative Republicans. Their similar ideological makeup and views suggest that the Tea Party movement is more a rebranding of core Republicanism than a new or distinct entity on the American political scene.
Gallup concludes by asking whether the movement is the "Same Cup of Tea?":
The Tea Party movement has received considerable news coverage this year, in large part because it appears to represent a new and potentially powerful force on the American political scene. Whether Tea Party supporters are a voting segment that is unique and distinct from the more traditional Republican conservative base, however, appears questionable. There is significant overlap between Tea Party supporters and conservative Republicans, both groups are highly enthusiastic about voting, and both are heavily skewed toward Republican candidates -- although the latter somewhat more so than the former.