Reply #55: I'm at work and can't really get involved in a big search now, but...

[LoZoccolo]

...the Pew Research Center has done a lot of work polling in this area, and have reports on religion and political affiliation which track the trend from the late eighties until now. I've been using them since at least 2004 to establish that the evangelical=Republican meme is just Republican propaganda they use to their own benefit (which, unfortunately, a lot of us are all too eager to perpetuate for them).