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2015 Report Cards: All Senators

These special year-end statistics dissect the legislative records of Members of Congress during the 2015 legislative year (Jan 6, 2015-Dec 31, 2015), looking at Members who served at the end of that period. This page was last updated on Jan 9, 2016.

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Bills Introduced

The number of bills each legislator introduced in 2015.

All Senators
most bills
#1 125 Sen. David Vitter [R-LA, 2005-2016]
#2 79 Sen. Orrin Hatch [R-UT]
#3 63 Sen. Ron Wyden [D-OR]
#4 61 Sen. Lisa Murkowski [R-AK]
#5 56 Sen. Charles “Chuck” Grassley [R-IA]
#6 54 Sen. Jeanne Shaheen [D-NH]
#7 53 Sen. Dianne Feinstein [D-CA]
#8 50 Sen. Benjamin Cardin [D-MD]
#9 49 Sen. Robert “Bob” Casey [D-PA]
#10 47 Sen. Rand Paul [R-KY]
#10 47 Sen. Robert “Rob” Portman [R-OH]
#12 46 Sen. Richard Blumenthal [D-CT]
#12 46 Sen. Dean Heller [R-NV]
#12 46 Sen. Mark Kirk [R-IL, 2010-2016]
#12 46 Sen. Jon Tester [D-MT]
#16 44 Sen. Sherrod Brown [D-OH]
#17 42 Sen. Richard Durbin [D-IL]
#17 42 Sen. Amy Klobuchar [D-MN]
#17 42 Sen. Charles “Chuck” Schumer [D-NY]
#17 42 Sen. John Thune [R-SD]
#21 41 Sen. Edward “Ed” Markey [D-MA]
#21 41 Sen. Robert “Bob” Menéndez [D-NJ]
#23 40 Sen. Barbara Boxer [D-CA, 1993-2016]
#24 38 Sen. Roy Blunt [R-MO]
#24 38 Sen. Tom Udall [D-NM]
#26 36 Sen. Mitch McConnell [R-KY]
#27 35 Sen. Mazie Hirono [D-HI]
#27 35 Sen. Marco Rubio [R-FL]
#29 33 Sen. Susan Collins [R-ME]
#29 33 Sen. Patty Murray [D-WA]
#31 32 Sen. John Barrasso [R-WY]
#31 32 Sen. Ron Johnson [R-WI]
#33 31 Sen. Jerry Moran [R-KS]
#33 31 Sen. John “Jack” Reed [D-RI]
#35 30 Sen. Kelly Ayotte [R-NH, 2011-2016]
#35 30 Sen. Maria Cantwell [D-WA]
#35 30 Sen. Ted Cruz [R-TX]
#35 30 Sen. Jeff Flake [R-AZ]
#35 30 Sen. John McCain [R-AZ, 1987-2018]
#40 29 Sen. John Cornyn [R-TX]
#40 29 Sen. Michael Enzi [R-WY]
#40 29 Sen. Bernard “Bernie” Sanders [I-VT]
#43 28 Sen. Lamar Alexander [R-TN]
#43 28 Sen. John “Johnny” Isakson [R-GA]
#45 27 Sen. Jeff Merkley [D-OR]
#46 26 Sen. Tammy Baldwin [D-WI]
#46 26 Sen. Cory Booker [D-NJ]
#46 26 Sen. Richard Burr [R-NC]
#46 26 Sen. Bill Cassidy [R-LA]
#46 26 Sen. Kirsten Gillibrand [D-NY]
#46 26 Sen. James “Jim” Inhofe [R-OK]
#46 26 Sen. Bill Nelson [D-FL]
#53 25 Sen. Alan “Al” Franken [D-MN, 2009-2017]
#53 25 Sen. Cory Gardner [R-CO]
#53 25 Sen. Heidi Heitkamp [D-ND]
#53 25 Sen. Debbie Stabenow [D-MI]
#53 25 Sen. Patrick “Pat” Toomey [R-PA]
#58 24 Sen. Deb Fischer [R-NE]
#58 24 Sen. Mike Lee [R-UT]
#60 23 Sen. Michael Bennet [D-CO]
#60 23 Sen. Thomas Carper [D-DE]
#60 23 Sen. Chris Coons [D-DE]
#60 23 Sen. Michael Crapo [R-ID]
#60 23 Sen. Brian Schatz [D-HI]
#60 23 Sen. Sheldon Whitehouse [D-RI]
#66 22 Sen. Christopher Murphy [D-CT]
#66 22 Sen. Pat Roberts [R-KS]
#68 20 Sen. Patrick Leahy [D-VT]
#69 18 Sen. John Hoeven [R-ND]
#70 17 Sen. John Boozman [R-AR]
#70 17 Sen. Steve Daines [R-MT]
#70 17 Sen. Martin Heinrich [D-NM]
#70 17 Sen. Roger Wicker [R-MS]
#74 16 Sen. Joe Donnelly [D-IN]
#74 16 Sen. Timothy Kaine [D-VA]
#74 16 Sen. Harry Reid [D-NV, 1987-2016]
#77 15 Sen. Angus King [I-ME]
#77 15 Sen. Barbara Mikulski [D-MD, 1987-2016]
#77 15 Sen. James Risch [R-ID]
#80 14 Sen. Elizabeth Warren [D-MA]
#81 13 Sen. Bob Corker [R-TN]
#81 13 Sen. Joe Manchin [D-WV]
#83 12 Sen. Claire McCaskill [D-MO]
#84 11 Sen. Lindsey Graham [R-SC]
#84 11 Sen. Gary Peters [D-MI]
#84 11 Sen. Tim Scott [R-SC]
#84 11 Sen. Mark Warner [D-VA]
#88 10 Sen. Mike Rounds [R-SD]
#89 9 Sen. Shelley Capito [R-WV]
#89 9 Sen. Daniel Coats [R-IN, 2011-2016]
#89 9 Sen. Thad Cochran [R-MS, 1979-2018]
#89 9 Sen. James Lankford [R-OK]
#93 8 Sen. Dan Sullivan [R-AK]
#94 7 Sen. Joni Ernst [R-IA]
#94 7 Sen. Jefferson “Jeff” Sessions [R-AL, 1997-2017]
#94 7 Sen. Thom Tillis [R-NC]
#97 6 Sen. Tom Cotton [R-AR]
#97 6 Sen. Richard Shelby [R-AL]
#99 4 Sen. David Perdue [R-GA]
#99 4 Sen. Benjamin Sasse [R-NE]
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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 2015) 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.