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2016 Report Cards
Senate Republicans / Ideology Score

These statistics dissect the legislative records of Members of Congress during the 114th Congress (Jan 6, 2015-Jan 3, 2017), as of Aug 24, 2017.

A higher or lower number below doesn’t necessarily make a legislator any better or worse, or more or less effective, than other Members of Congress. We present these statistics for you to understand the quantitative aspects of legislating and make your own judgements based on what legislative activities you think are important.

Keep in mind that there are many important aspects of being a legislator besides what can be measured, such as constituent services and performing oversight of the executive branch, which aren’t reflected here.

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Ideology Score

Our unique ideology analysis assigns a score to Members of Congress according to their legislative behavior by how similar the pattern of bills and resolutions they cosponsor are to other Members of Congress. The score can be interpreted as a conservative—liberal scale, although of course it only takes into account a small aspect of reality.

Senate Republicans
most conservative
#1 1.00 Sen. James “Jim” Inhofe [R-OK]
#2 0.94 Sen. Pat Roberts [R-KS]
#3 0.92 Sen. Ted Cruz [R-TX]
#4 0.92 Sen. John Barrasso [R-WY]
#5 0.90 Sen. James Lankford [R-OK]
#6 0.90 Sen. James Risch [R-ID]
#7 0.88 Sen. David Perdue [R-GA]
#8 0.88 Sen. Deb Fischer [R-NE]
#9 0.88 Sen. Mike Lee [R-UT]
#10 0.87 Sen. Tom Cotton [R-AR]
#11 0.87 Sen. Tim Scott [R-SC]
#12 0.87 Sen. Michael Enzi [R-WY]
#13 0.87 Sen. John Boozman [R-AR]
#14 0.86 Sen. David Vitter [R-LA, 2005-2016]
#15 0.86 Sen. Steve Daines [R-MT]
#16 0.85 Sen. John Cornyn [R-TX]
#17 0.85 Sen. Jefferson “Jeff” Sessions [R-AL, 1997-2017]
#18 0.85 Sen. Michael Crapo [R-ID]
#19 0.84 Sen. Ron Johnson [R-WI]
#20 0.84 Sen. John Thune [R-SD]
#21 0.84 Sen. Mike Rounds [R-SD]
#22 0.83 Sen. Daniel Coats [R-IN, 2011-2016]
#23 0.83 Sen. Bill Cassidy [R-LA]
#24 0.82 Sen. John “Johnny” Isakson [R-GA]
#25 0.82 Sen. Cory Gardner [R-CO]
#26 0.81 Sen. Marco Rubio [R-FL]
#27 0.81 Sen. Roy Blunt [R-MO]
#28 0.81 Sen. Jeff Flake [R-AZ, 2013-2018]
#29 0.80 Sen. Roger Wicker [R-MS]
#30 0.79 Sen. Mitch McConnell [R-KY]
#31 0.79 Sen. Jerry Moran [R-KS]
#32 0.79 Sen. John McCain [R-AZ, 1987-2018]
#33 0.79 Sen. John Hoeven [R-ND]
#34 0.79 Sen. Benjamin Sasse [R-NE]
#35 0.78 Sen. Orrin Hatch [R-UT, 1977-2018]
#36 0.78 Sen. Thom Tillis [R-NC]
#37 0.78 Sen. Joni Ernst [R-IA]
#38 0.77 Sen. Rand Paul [R-KY]
#39 0.77 Sen. Patrick “Pat” Toomey [R-PA]
#40 0.75 Sen. Charles “Chuck” Grassley [R-IA]
#41 0.75 Sen. Shelley Capito [R-WV]
#42 0.75 Sen. Richard Burr [R-NC]
#43 0.75 Sen. Thad Cochran [R-MS, 1979-2018]
#44 0.73 Sen. Dan Sullivan [R-AK]
#45 0.73 Sen. Richard Shelby [R-AL]
#46 0.72 Sen. Lamar Alexander [R-TN]
#47 0.70 Sen. Bob Corker [R-TN, 2007-2018]
#48 0.69 Sen. Dean Heller [R-NV, 2011-2018]
#49 0.69 Sen. Lindsey Graham [R-SC]
#50 0.69 Sen. Kelly Ayotte [R-NH, 2011-2016]
#51 0.68 Sen. Robert “Rob” Portman [R-OH]
#52 0.63 Sen. Mark Kirk [R-IL, 2010-2016]
#53 0.61 Sen. Lisa Murkowski [R-AK]
#54 0.43 Sen. Susan Collins [R-ME]
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For more, see our methodology. An ideology score is not computed for Members of Congress who introduced fewer than 10 bills or who have a low leadership score, as there is usually not enough data in these cases to compute reliable statistics. Note that because on this page only legislative activity in the 114th Congress is considered, the ideology score here may differ from those elsewhere on GovTrack.

Additional Notes

The Speaker’s Votes: Missed votes are not computed for the Speaker of the House. According to current House rules, the Speaker of the House is not required to vote in “ordinary legislative proceedings.” In practice this means the Speaker of the House rarely votes but is not considered absent.

Leadership/Ideology: The leadership and ideology scores are not displayed for Members of Congress who introduced fewer than 10 bills, or, for ideology, for Members of Congress that have a low leadership score, as there is usually not enough data in these cases to compute reliable leadership and ideology statistics.

Missing Bills: We exclude bills from some statistics where the sponsor’s original intent is not in the final bill because the bill’s text was replaced in whole with unrelated provisions (i.e. it became a vehicle for passage of unrelated provisions).

Ranking Members (RkMembs): The chair of a committee is always selected from the political party that holds the most seats in the chamber, called the “majority party”. The “ranking member” (sometimes “RkMembs”) is the title given to the senior-most member of the committee not in the majority party.

Freshmen/Sophomores: Freshmen and sophomores are Members of Congress whose first term (in the same chamber at the end of the 114th Congress) was the 114th Congress (freshmen) or 113th (sophomores). Members of Congress who took office within the last few months of a Congress are considered freshmen in the next Congress as well.