Think Progress has an excellent post up about the decline in the number of tea party events this year as compared to 2010. Please go read their analysis, because they anticipate the challenges from critics to their investigation:
For this report, ThinkProgress examined the total number of events across the country listed on the Tea Party Patriots (TPP) and Americans for Prosperity (AFP) websites each month. We then compared the number of Tea Parties that occurred in 2010 with the number that took place in the first seven months of 2011.
The results were startling.