Rep.-elect Keith Ellison of Minnesota will be the first Muslim ever to serve in Congress when he takes the oath of office next month. Here is the current breakdown of Congress, by religion:
RELIGIOUS AFFILIATION OF U.S. SENATORS
109th U.S. Congress (2005-2006)
Catholic 24
Baptist 7
Methodist 11
Presbyterian 15
Episcopalian 10
Jewish 11
Lutheran 3
Latter-day Saints 5
United Church of Christ/Congregationalist 6
Stone-Campbell 1
Christian Scientist 0
Eastern Orthodox/Greek Orthodox 2
Assemblies of God 0
Unitarian 1
Christian Reformed 0
Seventh-day Adventist 0
African Methodist Episcopal (AME) 0
Evangelical Free or Evangelical (not further specified) 1
Quaker 0
Community of Christ (RLDS) 0
Foursquare Gospel 1
Nazarene 0
United Brethren in Christ 0
Scientologist 0
Community Church 0
McLean Bible Church 1
"Protestant" (not further specified) 1
"Christian" (not further specified) 0
unspecified 0
TOTAL 100
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109th U.S. Congress, 2005: Senators
Chuck Grassley (Iowa-R) Baptist
Mitch McConnell (Kentucky-R) Baptist
Thad Cochran (Mississippi-R) Baptist
Trent Lott (Mississippi-R) Baptist
Tom Coburn (Oklahoma-R) Baptist
Robert Byrd (West Virginia-D) Baptist
Lindsey Graham (South Carolina-R) Southern Baptist
Lisa Murkowski (Alaska-R) Catholic
Ken Salazar (Colorado-D) Catholic
Christopher Dodd (Connecticut-D) Catholic
Joseph Biden (Delaware-D) Catholic
Mel Martinez (Florida-R) Catholic
Sam Brownback (Kansas-R) Catholic
Tom Harkin (Iowa-D) Catholic
Richard Durbin (Illinois-D) Catholic
Jim Bunning (Kentucky-R) Catholic
Mary Landrieu (Louisiana-D) Catholic
David Vitter (Louisiana-R) Catholic
Edward Kennedy (Mass-D) Catholic
John Kerry (Mass-D) Catholic
Barbara Mikulski (Maryland-D) Catholic
Susan Collins (Maine-R) Catholic
John Sununu (New Hampshire-R) Catholic
Pete Domenici (New Mexico-R) Catholic
Mike DeWine (Ohio-R) Catholic
George Voinovich (Ohio-R) Catholic
Rick Santorum (Penn-R) Catholic
Jack Reed (Rhode Island-D) Catholic
Patrick Leahy (Vermont-D) Catholic
Maria Cantwell (Washington-D) Catholic
Patty Murray (Washington-D) Catholic
John Cornyn (Texas-R) Church of Christ (Stone-Campbell)
Ted Stevens (Alaska-R) Episcopalian
Blanche Lincoln (Arkansas-D) Episcopalian
John McCain (Arizona-R) Episcopalian
Saxby Chambliss (Georgia-R) Episcopalian
Evan Bayh (Indiana-D) Episcopalian
Chuck Hagel (Nebraska-R) Episcopalian
Bill Nelson (Florida-D) Episcopalian
Lincoln Chafee (Rhode Island-R) Episcopalian
Kay Hutchison (Texas-R) Episcopalian
John Warner (Virginia-R) Episcopalian
Mark Pryor (Arkansas-D) Evangelical
Paul Sarbanes (Maryland-D) Greek Orthodox
Olympia Snowe (Maine-R) Greek Orthodox
John Ensign (Nevada-R) International Church of the Foursquare Gospel
Joseph Lieberman (Connecticut-D) Orthodox Judaism
Barbara Boxer (Calif-D) Jewish
Dianne Feinstein (Calif-D) Jewish
Carl Levin (Michigan-D) Jewish
Norm Coleman (Minnesota-R) Jewish
Frank Lautenberg (New Jersey-D) Jewish
Charles Schumer (New York-D) Jewish
Ron Wyden (Oregon-D) Jewish
Arlen Specter (Penn-R) Jewish
Russell Feingold (Wisconsin-D) Jewish
Herb Kohl (Wisconsin-D) Jewish
Michael Crapo (Idaho-R) Latter-day Saint
Harry Reid (Nevada-D) Latter-day Saint
Gordon Smith (Oregon-R) Latter-day Saint
Robert Bennett (Utah-R) Latter-day Saint
Orrin Hatch (Utah-R) Latter-day Saint
Conrad Burns (Montana-R) Lutheran
Byron Dorgan (North Dakota-D) Lutheran
Tim Johnson (South Dakota-D) Lutheran
John Thune (South Dakota-R) McLean Bible Church
Jeff Sessions (Alabama-R) Methodist
Johnny Isakson (Georgia-R) Methodist
Daniel Inouye (Hawaii-D) Methodist
Larry Craig (Idaho-R) Methodist
Richard Lugar (Indiana-R) Methodist
Ben Nelson (Nebraska-D) Methodist
Pat Roberts (Kansas-R) Methodist
Jeff Bingaman (New Mexico-D) Methodist
Hillary Clinton (New York-D) Methodist
Craig Thomas (Wyoming-R) Methodist
Debbie Stabenow (Michigan-D) United Methodist
Richard Shelby (Alabama-R) Presbyterian
Jon Kyl (Arizona-R) Presbyterian
Thomas Carper (Delaware-D) Presbyterian
Mark Dayton (Minnesota-D) Presbyterian
Christopher Bond (Missouri-R) Presbyterian
Richard Burr (North Carolina-R) Presbyterian
Elizabeth Dole (North Carolina-R) Presbyterian
James Inhofe (Oklahoma-R) Presbyterian
Jim DeMint (South Carolina-R) Presbyterian
Lamar Alexander (Tenn-R) Presbyterian
Bill Frist (Tenn-R) Presbyterian
George Allen (Virginia-R) Presbyterian
John Rockefeller (West Virginia-D) Presbyterian
Michael Enzi (Wyoming-R) Presbyterian
James Talent (Missouri-R) Presbyterian (PCA)
Kent Conrad (North Dakota-D) Unitarian-Universalist
Barack Obama (Illinois-D) United Church of Christ
Jon Corzine (New Jersey-D) United Church of Christ
Max Baucus (Montana-D) United Church of Christ
Daniel Akaka (Hawaii-D) Congregationalist
Judd Gregg (New Hampshire-R) Congregationalist
James Jeffords (Vermont - Indep.) Congregationalist
Wayne Allard (Colorado-R) "Protestant"
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RELIGIOUS AFFILIATION OF U.S. REPRESENTATIVES
109th U.S. Congress (2005-2006)
Catholic 130
Baptist 68
Methodist 50
Presbyterian 37
Episcopalian 32
Jewish 26
Lutheran 18
Latter-day Saints 11
United Church of Christ/Congregationalist 4
Stone-Campbell 6
Christian Scientist 5
Eastern Orthodox/Greek Orthodox 2
Assemblies of God 4
Unitarian 2
Christian Reformed 2
Seventh-day Adventist 2
African Methodist Episcopal (AME) 2
Evangelical Free or Evangelical (not further specified) 1
Quaker 1
Community of Christ (RLDS) 1
Foursquare Gospel 0
Nazarene 1
United Brethren in Christ 1
Scientologist 1
Community Church 1
McLean Bible Church 0
"Protestant" (not further specified) 20
"Christian" (not further specified) 5
unspecified 4
TOTAL 435
Source: Adherents.com: National & World Religion Statistics