Most Conservative

DeMint, Jim, R-S.C. 7.5 92.5

Bunning, Jim, R-Ky. 8.2 91.8

Kyl, Jon, R-Ariz. 9.2 90.8

Cornyn, John, R-Texas 9.2 90.8

Sessions, Jeff, R-Ala. 9.5 90.5

Isakson, Johnny, R-Ga. 10.5 89.5

Enzi, Michael, R-Wyo. 10.5 89.5

Inhofe, James, R-Okla. 10.7 89.3

Chambliss, Saxby, R-Ga. 11.8 88.2

Allard, Wayne, R-Colo. 13.8 86.2

Thomas, Craig, R-Wyo. 15.5 84.5

McConnell, Mitch, R-Ky. 15.7 84.3

Vitter, David, R-La. 15.7 84.3

Crapo, Mike, R-Idaho 16.3 83.7

Thune, John, R-S.D. 17 83

Craig, Larry, R-Idaho 18.3 81.7

Dole, Elizabeth, R-N.C. 19.3 80.7

Coburn, Tom, R-Okla. 21.2 78.8

Bond, Christopher (Kit), R-Mo. 21.5 78.5

Frist, Bill, R-Tenn. * 21.5 78.5

Roberts, Pat, R-Kan. 21.8 78.2

Allen, George, R-Va. * 22 78

Grassley, Charles, R-Iowa 22.7 77.3

Burns, Conrad, R-Mont. * 22.8 77.2

Domenici, Pete, R-N.M. 24.7 75.3

Lott, Trent, R-Miss. 26.7 73.3

Martinez, Mel, R-Fla. 26.8 73.2

Hatch, Orrin, R-Utah 27 73

Hagel, Chuck, R-Neb. 28 72

Alexander, Lamar, R-Tenn. 28.5 71.5

Gregg, Judd, R-N.H. 28.8 71.2

Ensign, John, R-Nev. 29.2 70.8

Graham, Lindsey, R-S.C. 29.2 70.8

Brownback, Sam, R-Kan. 29.7 70.3

Santorum, Rick, R-Pa. * 29.7 70.3

Burr, Richard, R-N.C. 29.8 70.2

Sununu, John, R-N.H. 30.8 69.2

Talent, Jim, R-Mo. * 31.7 68.3

Hutchison, Kay Bailey, R-Texas 33.7 66.3

Shelby, Richard, R-Ala. 35.7 64.3

Cochran, Thad, R-Miss. 35.7 64.3

Stevens, Ted, R-Alaska 36 64

Bennett, Robert, R-Utah 36 64

Murkowski, Lisa, R-Alaska 38.8 61.2

Voinovich, George, R-Ohio 41 59

McCain, John, R-Ariz. 43.3 56.7

Warner, John, R-Va. 44.7 55.3

Nelson, Ben, D-Neb. 45.3 54.7

Lugar, Richard, R-Ind. 45.7 54.3

Smith, Gordon, R-Ore. 46 54

Coleman, Norm, R-Minn. 46.2 53.8

DeWine, Mike, R-Ohio * 51 49

Specter, Arlen, R-Pa. 52.5 47.5

Collins, Susan, R-Maine 52.8 47.2

Snowe, Olympia, R-Maine 55.5 44.5

Landrieu, Mary, D-La. 57.5 42.5

Chafee, Lincoln, R-R.I. * 59 41

Pryor, Mark, D-Ark. 59.5 40.5

Nelson, Bill, D-Fla. 60.3 39.7

Lincoln, Blanche, D-Ark. 62.3 37.7

Conrad, Kent, D-N.D. 65.3 34.7

Baucus, Max, D-Mont. 66.2 33.8

Carper, Thomas, D-Del. 67.2 32.8

Lieberman, Joe, ID-Conn. 67.5 32.5

Salazar, Ken, D-Colo. 67.8 32.2

Stabenow, Debbie, D-Mich. 68 32

Johnson, Tim, D-S.D. 69.2 30.8

Clinton, Hillary Rodham, D-N.Y. 70.2 29.8

Byrd, Robert, D-W.Va. 70.5 29.5

Kohl, Herb, D-Wis. 71 29

Inouye, Daniel, D-Hawaii 71.8 28.2

Bayh, Evan, D-Ind. 73.3 26.7

Dorgan, Byron, D-N.D. 74.3 25.7

Schumer, Charles, D-N.Y. 74.5 25.5

Feinstein, Dianne, D-Calif. 76.5 23.5

Biden, Joseph, D-Del. 77.5 22.5

Reid, Harry, D-Nev. 78.2 21.8

Cantwell, Maria, D-Wash. 79.7 20.3

Dayton, Mark, D-Minn. * 81 19

Jeffords, James, I-Vt. * 82.5 17.5

Menendez, Robert, D-N.J. 82.7 17.3

Akaka, Daniel, D-Hawaii 83.5 16.5

Dodd, Christopher, D-Conn. 84 16

Lautenberg, Frank, D-N.J. 84.3 15.7

Feingold, Russell, D-Wis. 84.5 15.5

Levin, Carl, D-Mich. 85.3 14.7

Bingaman, Jeff, D-N.M. 85.5 14.5

Kerry, John, D-Mass. 85.7 14.3

Obama, Barack, D-Ill. 86 14

Wyden, Ron, D-Ore. 86 14

Mikulski, Barbara, D-Md. 88.8 11.2

Murray, Patty, D-Wash. 89.3 10.7

Sarbanes, Paul, D-Md. * 89.7 10.3

Reed, Jack, D-R.I. 91.3 8.7

Harkin, Tom, D-Iowa 92 8

Leahy, Patrick, D-Vt. 92.5 7.5

Kennedy, Edward, D-Mass. 93.7 6.3

Boxer, Barbara, D-Calif. 95 5

Durbin, Richard, D-Ill. 95.2 4.8

Rockefeller, Jay IV, D-W.Va. N/A N/A

Most Liberal Senators