These are the members closest to the ideological center of the Senate and the House, according to National Journal’s 2011 vote ratings. The members with composite scores closest to 50 are at the exact center of each chamber and are in bold.

(KEY: Liberal Composite Score, Conservative Composite Score)

SENATE

Mike Johanns, R-Neb.: 35.5, 64.5

Roy Blunt, R-Mo.: 36.2, 63.8

Thad Cochran, R-Miss.: 37.3, 62.7

Lindsey Graham, R-S.C.: 39.2, 60.8

Mark Kirk, R-Ill.: 40.0, 60.0

Lisa Murkowski, R-Alaska: 41.2, 58.8

Scott Brown, R-Mass. : 44.7, 55.3

Olympia Snowe, R-Maine: 45.0, 55.0

Susan Collins, R-Maine: 46.3, 53.7 (Most liberal Republican)

Ben Nelson, D-Neb.: 48.8, 51.2 (Most conservative Democrat and At the center of the Senate)

Mark Pryor, D-Ark.: 50.7, 49.3 (At the center of the Senate)

Joe Lieberman, ID-Conn.: 57.7, 42.3

Claire McCaskill, D-Mo.: 58.0, 42.0

Carl Levin, D-Mich.: 59.2, 40.8

Joe Manchin, D-W.Va.: 59.3, 40.7

Mary Landrieu, D-La.: 61.3, 38.7

Bill Nelson, D-Fla.: 63.5, 36.5

Max Baucus, D-Mont.: 63.8, 36.2

Jim Webb, D-Va.: 64.8, 35.2

 

(KEY: Liberal Composite Score, Conservative Composite Score)

HOUSE

Steve Stivers, R-Ohio: 35.3, 64.7

Rodney Alexander, R-La.: 35.5, 64.5

Lou Barletta, R-Pa.: 35.5, 64.5

Chip Cravaack, R-Minn.: 35.8, 64.2

Geoff Davis, R-Ky.: 35.8, 64.2

Sean Duffy, R-Wis.: 35.8, 64.2

Mary Bono Mack, R-Calif.: 36.0, 64.0

Raul Labrador, R-Idaho: 36.8, 63.2

Allen West, R-Fla.: 36.8, 63.2

David Dreier, R-Calif.: 37.2, 62.8

Mike Rogers, R-Ala.: 37.3, 62.7

Paul Broun, R-Ga.: 37.7, 62.3

Connie Mack, R-Fla.: 38.2, 61.8

Tom Reed, R-N.Y.: 38.2, 61.8

Jon Runyan, R-N.J.: 38.3, 61.7

Aaron Schock, R-Ill.: 38.3, 61.7

Kenny Marchant, R-Texas: 38.7, 61.3

Scott Rigell, R-Va.: 38.7, 61.3

Bobby Schilling, R-Ill.: 38.8, 61.2

Spencer Bachus, R-Ala.: 39.3, 60.7

Pat Tiberi, R-Ohio: 39.7, 60.3

Rob Woodall, R-Ga.: 39.8, 60.2

Jason Chaffetz, R-Utah: 40.5, 59.5

John Shimkus, R-Ill.: 40.5, 59.5

Leonard Lance, R-N.J.: 40.8, 59.2

Tom McClintock, R-Calif.: 41.0, 59.0

Bill Young, R-Fla.: 41.5, 58.5

Adam Kinzinger, R-Ill.: 41.8, 58.2

Morgan Griffith, R-Va.: 42.2, 57.8

Tom Cole, R-Okla.: 43.2, 56.8

Denny Rehberg, R-Mont.: 43.5, 56.5

Ed Whitfield, R-Ky.: 43.8, 56.2

Jim Gerlach, R-Pa.: 44.2, 55.8

Jo Ann Emerson, R-Mo.: 44.3, 55.7

Glenn Thompson, R-Pa.: 44.3, 55.7

Don Young, R-Alaska: 44.3, 55.7

Shelley Moore Capito, R-W.Va.: 44.5, 55.5

Mike Turner, R-Ohio: 44.5, 55.5

Dana Rohrabacher, R-Calif.: 44.7, 55.3

Rodney Frelinghuysen, R-N.J.: 44.8, 55.2

Fred Upton, R-Mich.: 44.8, 55.2

Tom Petri, R-Wis.: 45.0, 55.0

Roscoe Bartlett, R-Md.: 45.5, 54.5

Brian Bilbray, R-Calif.: 45.7, 54.3

Judy Biggert, R-Ill.: 46.0, 54.0

Charlie Dent, R-Pa.: 46.0, 54.0

John Duncan, R-Tenn.: 46.3, 53.7

Ileana Ros-Lehtinen, R-Fla.: 46.3, 53.7

Mario Diaz-Balart, R-Fla.: 46.5, 53.5

Joe Heck, R-Nev.: 46.5, 53.5

John Campbell, R-Calif.: 47.0, 53.0

Peter King, R-N.Y.: 47.0, 53.0

Frank Wolf, R-Va.: 47.2, 52.8

Nan Hayworth, R-N.Y.: 47.3, 52.7

David McKinley, R-W.Va.: 47.3, 52.7

Jaime Herrera Beutler, R-Wash.: 47.5, 52.5

Dave Reichert, R-Wash.: 47.8, 52.2

Todd Platts, R-Pa.: 48.2, 51.8

Frank LoBiondo, R-N.J.: 49.5, 50.5

Michael Grimm, R-N.Y.: 49.8, 50.2 (At the center of the House)

Pat Meehan, R-Pa.: 50.0, 50.0 (At the center of the House)

Jeff Fortenberry, R-Neb.: 50.2, 49.8 (At the center of the House)

Chris Gibson, R-N.Y.: 51.2, 48.8

Mike Fitzpatrick, R-Pa.: 52.3, 47.7

Robert Dold, R-Ill.: 52.7, 47.3

Richard Hanna, R-N.Y.: 52.8, 47.2

Charlie Bass, R-N.H.: 53.2, 46.8

Dan Boren, D-Okla.: 53.7, 46.3 (Most conservative Democrat)

Chris Smith, R-N.J.: 53.8, 46.2

Tim Johnson, R-Ill.: 54.0, 46.0

Justin Amash, R-Mich.: 54.2, 45.8

Mike Ross, D-Ark.: 54.2, 45.8

Ron Paul, R-Texas: 54.3, 45.7

Steven LaTourette, R-Ohio: 54.5, 45.5

Jim Matheson, D-Utah: 54.5, 45.5

Jason Altmire, D-Pa.: 55.8, 44.2

Mike McIntyre, D-N.C.: 56.2, 43.8

Joe Donnelly, D-Ind.: 57.2, 42.8

Tim Holden, D-Pa.: 57.2, 42.8

John Barrow, D-Ga.: 57.5, 42.5

Collin Peterson, D-Minn.: 57.5, 42.5

Henry Cuellar, D-Texas: 57.7, 42.3

Ben Chandler, D-Ky.: 57.8, 42.2

Jim Cooper, D-Tenn.: 58.3, 41.7

Walter Jones, R-N.C.: 58.5, 41.5 (Most liberal Republican)

Jim Costa, D-Calif.: 58.8, 41.2

Larry Kissell, D-N.C.: 59.2, 40.8

Heath Shuler, D-N.C.: 59.2, 40.8

Dennis Cardoza, D-Calif.: 59.5, 40.5

Nick Rahall, D-W.Va.: 59.5, 40.5

Jerry Costello, D-Ill.: 59.7, 40.3

Daniel Lipinski, D-Ill.: 59.8, 40.2

Gene Green, D-Texas: 60.0, 40.0

Bill Owens, D-N.Y.: 60.2, 39.8

Sanford Bishop, D-Ga.: 60.5, 39.5

Ron Kind, D-Wis.: 61.2, 38.8

Leonard Boswell, D-Iowa: 61.8, 38.2

Dutch Ruppersberger, D-Md.: 63.8, 36.2

Terri Sewell, D-Ala.: 64.0, 36.0

Silvestre Reyes, D-Texas: 64.2, 35.8

Gary Peters, D-Mich.: 64.3, 35.7

Tim Walz, D-Minn.: 64.3, 35.7

Shelley Berkley, D-Nev.: 64.7, 35.3

Kurt Schrader, D-Ore.: 64.7, 35.3

John Dingell, D-Mich.: 64.8, 35.2

Joe Baca, D-Calif.: 65.0, 35.0

John Carney, D-Del.: 65.0, 35.0

This article appears in the Feb. 25, 2012, edition of National Journal.

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