According to a new study here and another one here. Highlight:

WASHINGTON DC (April 1, 2010) — Tea Party activists may be ardent supporters of economic conservatism but are similar to the overall electorate when it comes to economic priorities, according to the findings of a new report released by The Winston Group today on the political movement.

In one of the most extensive looks to date at just who Tea Party activists are, how they think, and the ideas that matter to them, the report found that 17% of the people polled considered themselves “part of the Tea Party movement” and more than four in ten Tea Party members said they were either Independents or Democrats.