New Pew study on religious groups and their political leanings.

U.S. religious groups and their political leanings | Pew Research CenterIt is interesting because Catholics lean 44 to 37 toward the Democrats despite the strongly anti-abortion and anti same sax marriage equality stand of the United States Conference of Catholic Bishops.All evangelical groups lean toward the Republicans by double-digit margins except the 7th Day Adventists and Jehovah's Witness, which lean Democratic by double digits. The Mormons are the most Republican leaning group.All 7 non-Christian groups favor the Democrats by at least a 38 point margin.Comments?Any interesting background information from anybody here?Explanations?Clues as to why this is as it is?Has it always been this way?