The Lugar Center - McCourt School Bipartisan Index Senate Scores 115th Congress (2017-2018) Senator (by score) Senator (alphabetical) # Name State Party Score # Name State Party Score 1 Susan Collins ME R 3.16636 46 Lamar Alexander TN R 0.14695 2 Rob Portman OH R 2.57356 62 Tammy Baldwin WI D -0.25032 3 Shelley Capito WV R 1.76424 63 John Barrasso WY R -0.28213 4 Joe Donnelly IN D 1.72798 44 Michael Bennet CO D 0.18292 5 Cory Gardner CO R 1.55096 90 Richard Blumenthal CT D -1.05151 6 Lindsey Graham SC R 1.54045 13 Roy Blunt MO R 1.18004 7 Todd Young IN R 1.53858 88 Cory Booker NJ D -0.87917 8 Chuck Grassley IA R 1.53495 24 John Boozman AR R 0.75339 9 Dean Heller NV R 1.46778 58 Sherrod Brown OH D -0.16474 10 Marco Rubio FL R 1.30547 16 Richard Burr NC R 0.89184 11 Johnny Isakson GA R 1.24246 52 Maria Cantwell WA D 0.02605 12 Chris Coons DE D 1.18688 3 Shelley Capito WV R 1.76424 13 Roy Blunt MO R 1.18004 48 Ben Cardin MD D 0.09095 14 Lisa Murkowski AK R 1.12386 66 Tom Carper DE D -0.33855 15 Mark Warner VA D 0.90130 54 Bob Casey PA D -0.06218 16 Richard Burr NC R 0.89184 31 Bill Cassidy LA R 0.69363 17 Gary Peters MI D 0.87069 83 Thad Cochran MS R -0.80435 18 Steve Daines MT R 0.85493 1 Susan Collins ME R 3.16636 19 Joni Ernst IA R 0.85402 12 Chris Coons DE D 1.18688 20 Bob Corker TN R 0.83760 20 Bob Corker TN R 0.83760 21 Pat Toomey PA R 0.80095 32 John Cornyn TX R 0.62817 22 Roger Wicker MS R 0.76602 74 Catherine Cortez Masto NV D -0.53053 23 Amy Klobuchar MN D 0.75957 71 Tom Cotton AR R -0.44949 24 John Boozman AR R 0.75339 27 Mike Crapo ID R 0.73178 25 Joe Manchin WV D 0.74508 75 Ted Cruz TX R -0.57694 26 Jerry Moran KS R 0.73985 18 Steve Daines MT R 0.85493 27 Mike Crapo ID R 0.73178 4 Joe Donnelly IN D 1.72798 28 Angus King ME D 0.72082 78 Tammy Duckworth IL D -0.62510 29 Orrin Hatch UT R 0.71742 89 Dick Durbin IL D -1.02844 30 Tim Scott SC R 0.69569 77 Mike Enzi WY R -0.61243 31 Bill Cassidy LA R 0.69363 19 Joni Ernst IA R 0.85402 32 John Cornyn TX R 0.62817 79 Dianne Feinstein CA D -0.63101 33 Pat Roberts KS R 0.60239 43 Deb Fischer NE R 0.26497 34 Thom Tillis NC R 0.58389 56 Jeff Flake AZ R -0.08109 35 Claire McCaskill MO D 0.58377 94 Al Franken MN D -1.29086 36 Doug Jones AL D 0.57794 5 Cory Gardner CO R 1.55096 37 John Hoeven ND R 0.56486 84 Kirsten Gillibrand NY D -0.81098 38 Heidi Heitkamp ND D 0.52012 6 Lindsey Graham SC R 1.54045 39 Dan Sullivan AK R 0.40123 8 Chuck Grassley IA R 1.53495 40 John Thune SD R 0.39622 95 Kamala Harris CA D -1.29805 41 Bill Nelson FL D 0.35658 65 Maggie Hassan NH D -0.33729 42 Jon Tester MT D 0.29562 29 Orrin Hatch UT R 0.71742 43 Deb Fischer NE R 0.26497 57 Martin Heinrich NM D -0.11382 44 Michael Bennet CO D 0.18292 38 Heidi Heitkamp ND D 0.52012 45 Jim Risch ID R 0.16639 9 Dean Heller NV R 1.46778 46 Lamar Alexander TN R 0.14695 86 Mazie Hirono HI D -0.86628 47 John McCain AZ R 0.11885 37 John Hoeven ND R 0.56486 48 Ben Cardin MD D 0.09095 50 Jim Inhofe OK R 0.05684 49 John Kennedy LA R 0.06616 11 Johnny Isakson GA R 1.24246 50 Jim Inhofe OK R 0.05684 51 Ron Johnson WI R 0.04640 51 Ron Johnson WI R 0.04640 36 Doug Jones AL D 0.57794 52 Maria Cantwell WA D 0.02605 61 Tim Kaine VA D -0.24979 53 Mike Rounds SD R 0.01359 49 John Kennedy LA R 0.06616 54 Bob Casey PA D -0.06218 28 Angus King ME D 0.72082 55 Rand Paul KY R -0.07711 23 Amy Klobuchar MN D 0.75957 56 Jeff Flake AZ R -0.08109 67 James Lankford OK R -0.34880 57 Martin Heinrich NM D -0.11382 69 Patrick Leahy VT D -0.40831 58 Sherrod Brown OH D -0.16474 64 Mike Lee UT R -0.32872 59 Jeanne Shaheen NH D -0.17730 25 Joe Manchin WV D 0.74508 60 Debbie Stabenow MI D -0.20576 91 Ed Markey MA D -1.10821 61 Tim Kaine VA D -0.24979 47 John McCain AZ R 0.11885 62 Tammy Baldwin WI D -0.25032 35 Claire McCaskill MO D 0.58377 63 John Barrasso WY R -0.28213 76 Bob Menéndez NJ D -0.60157 64 Mike Lee UT R -0.32872 98 Jeff Merkley OR D -1.43154 65 Maggie Hassan NH D -0.33729 26 Jerry Moran KS R 0.73985 66 Tom Carper DE D -0.33855 14 Lisa Murkowski AK R 1.12386 67 James Lankford OK R -0.34880 97 Chris Murphy CT D -1.37243 68 Elizabeth Warren MA D -0.35568 93 Patty Murray WA D -1.24455 69 Patrick Leahy VT D -0.40831 41 Bill Nelson FL D 0.35658 70 Ben Sasse NE R -0.43440 55 Rand Paul KY R -0.07711 71 Tom Cotton AR R -0.44949 73 David Perdue GA R -0.50760 72 Brian Schatz HI D -0.47053 17 Gary Peters MI D 0.87069 73 David Perdue GA R -0.50760 2 Rob Portman OH R 2.57356 74 Catherine Cortez Masto NV D -0.53053 87 Jack Reed RI D -0.87102 75 Ted Cruz TX R -0.57694 45 Jim Risch ID R 0.16639 76 Bob Menéndez NJ D -0.60157 33 Pat Roberts KS R 0.60239 77 Mike Enzi WY R -0.61243 53 Mike Rounds SD R 0.01359 78 Tammy Duckworth IL D -0.62510 10 Marco Rubio FL R 1.30547 79 Dianne Feinstein CA D -0.63101 100 Bernie Sanders VT D -2.03193 80 Sheldon Whitehouse RI D -0.77304 70 Ben Sasse NE R -0.43440 81 Ron Wyden OR D -0.78872 72 Brian Schatz HI D -0.47053 82 Tom Udall NM D -0.80041 30 Tim Scott SC R 0.69569 83 Thad Cochran MS R -0.80435 59 Jeanne Shaheen NH D -0.17730 84 Kirsten Gillibrand NY D -0.81098 96 Richard Shelby AL R -1.37209 85 Chris Van Hollen MD D -0.82857 92 Tina Smith MN D -1.16668 86 Mazie Hirono HI D -0.86628 60 Debbie Stabenow MI D -0.20576 87 Jack Reed RI D -0.87102 99 Luther Strange AL R -1.48062 88 Cory Booker NJ D -0.87917 39 Dan Sullivan AK R 0.40123 89 Dick Durbin IL D -1.02844 42 Jon Tester MT D 0.29562 90 Richard Blumenthal CT D -1.05151 40 John Thune SD R 0.39622 91 Ed Markey MA D -1.10821 34 Thom Tillis NC R 0.58389 92 Tina Smith MN D -1.16668 21 Pat Toomey PA R 0.80095 93 Patty Murray WA D -1.24455 82 Tom Udall NM D -0.80041 94 Al Franken MN D -1.29086 85 Chris Van Hollen MD D -0.82857 95 Kamala Harris CA D -1.29805 15 Mark Warner VA D 0.90130 96 Richard Shelby AL R -1.37209 68 Elizabeth Warren MA D -0.35568 97 Chris Murphy CT D -1.37243 80 Sheldon Whitehouse RI D -0.77304 98 Jeff Merkley OR D -1.43154 22 Roger Wicker MS R 0.76602 99 Luther Strange AL R -1.48062 81 Ron Wyden OR D -0.78872 100 Bernie Sanders VT D -2.03193 7 Todd Young IN R 1.53858 GovTrack data was used in the production of these scores Notes: Senators who served fewer than 10 months are excluded (Cindy Hyde-Smith, R-MS; Jon Kyl, R-AZ; Jeff Sessions, R-AL). Majority Leader Mitch McConnell (R-KY) and Minority Leader Chuck Schumer (D-NY) are excluded. Senators who are independent but caucus with a party for purposes of determining which party is in the majority are counted as a member of that party..