Copied from the Presbyterian Church (US) Washington Office

Religious and Party Affiliation
Thirteen members of the 109th Senate identified themselves as being Presbyterian (10 were Republicans and 3 were Democrats). Nine members remain after the November elections for the 110th Senate seats (seven are Republicans and two are Democrats). Presbyterians now hold nine percent of the seats in the U.S. Senate down from 13 percent).

Thirty-Eight members of the 109th House identified themselves as Presbyterian (26 were Republicans and 12 were Democrat). There are now just 32 Presbyterians in the 110th Congress, a combination of new and returning members (18 are Republican and 14 are Democrat).

Overall, the 41 Congressional Presbyterians make us the fifth most represented faith group in the Senate and the House. We trail the 126 Catholics, 57 Baptist, 50 Methodist, and 40 Protestant–Unspecified2). Following Presbyterians are 30 Jewish, 26 Episcopalian, 15 Lutheran, ten Mormon, six Unspecified, five Christian Scientist, five Eastern Orthodox, four Pentecostal, three African Methodist Episcopal, three United Church of Christ, two Buddhist, two Christian Reformed Church, two Seventh-Day Adventist, one Christian Church, one Community of Christ, one Disciples of Christ, one Muslim, one Quaker and one Unitarian. For the first time, a member of the Muslim faith has been elected to the House — Minnesota Democrat Keith Ellison.