More Foleygate trouble for the GOP -- this time among evangelicals. Here are the key points in a Pew poll released today and written about in the Washington Post which finds the GOP's backing is dropping among evangelical voters:

Even a small shift in the loyalty of conservative Christian voters such as Sunde could spell trouble for the GOP this fall. In 2004, white evangelical or born-again Christians made up a quarter of the electorate, and 78 percent of them voted Republican, according to exit polls. But some pollsters believe that evangelical support for the GOP peaked two years ago and that what has been called the "God gap" in politics is shrinking.

A nationwide poll of 1,500 registered voters released yesterday by the nonpartisan Pew Research Center found that 57 percent of white evangelicals are inclined to vote for Republican congressional candidates in the midterm elections, a 21-point drop in support among this critical part of the GOP base....

In the latest survey, taken in the last 10 days of September and the first four days of October, the percentage of evangelicals who think that Republicans govern "in a more honest and ethical way" than Democrats has plunged to 42 percent, from 55 percent at the start of the year.

The Post notes that this dynamic is likely to hurt GOPer Michelle Bachmann, who's being challenged by Dem child advocate Patty Wetterling. In an interesting footnote, the article says one reason for the shift could be new Dem efforts to reach out to churchgoing voters.