All told, 41 percent of Americans identify themselves as supporters of the movement, compared with a high of 47 percent last September. Forty-five percent oppose it; 14 percent have no opinion. Support has dropped disproportionately among young adults in that period, down 20 points from 51 percent to 31 percent.

While overall support is roughly balanced with overall opposition, “strong” opponents outnumber strong supporters by 2-1. But perhaps most damaging is the buzz: Fifty percent of Americans say the more they hear about the Tea Party, the less they like it; just 27 percent say they like it more. That compares with a much closer (albeit still negative) 43-34 percent split on this question in April 2010.

These views have grown more negative particularly among young adults, seniors, women, moderates and people in the $50,000 to $100,000 income range, all with 10- to 17-point increases in “like it less” responses as they hear more about the Tea Party movement.