Where I live(the bible belt), about 95% are anti-gay. I don't know how other places and denominations are. I can only judge from the set of Christians i've personally met. I really hope it's different in other places, but most of the Christians i've met are bigots (
case in point).
I know it's quite likely they're not all like this. It's just that for some reason I don't know very many of the good ones.