skip to main content

2014 Report Cards
Serving 10+ Years (Senate) / Cosponsors

These statistics dissect the legislative records of Members of Congress during the 113th Congress (Jan 3, 2013-Jan 2, 2015), as of Jan 12, 2015.

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.

Page Icon



The total number of cosponsors joining the bills written by each legislator in the 113th Congress.

Serving 10+ Years (Senate)
most cosponsors
#1 894 Sen. Robert “Bob” Menendez [D-NJ]
#2 584 Sen. Thomas “Tom” Harkin [D-IA, 1985-2014]
#3 578 Sen. Sherrod Brown [D-OH]
#4 553 Sen. Patrick Leahy [D-VT]
#5 481 Sen. Richard Durbin [D-IL]
#6 466 Sen. Barbara Boxer [D-CA, 1993-2016]
#7 457 Sen. Amy Klobuchar [D-MN]
#8 456 Sen. Mary Landrieu [D-LA, 1997-2014]
#9 432 Sen. Jon Tester [D-MT]
#10 411 Sen. Robert “Bob” Casey [D-PA]
#11 399 Sen. John “Jack” Reed [D-RI]
#12 392 Sen. Benjamin Cardin [D-MD]
#13 370 Sen. Harry Reid [D-NV, 1987-2016]
#14 365 Sen. Bernard “Bernie” Sanders [I-VT]
#15 342 Sen. Charles “Chuck” Schumer [D-NY]
#16 326 Sen. Ron Wyden [D-OR]
#17 312 Sen. John Cornyn [R-TX]
#18 311 Sen. Orrin Hatch [R-UT, 1977-2018]
#19 305 Sen. Lindsey Graham [R-SC]
#20 295 Sen. Patty Murray [D-WA]
#21 286 Sen. David Vitter [R-LA, 2005-2016]
#22 278 Sen. John Barrasso [R-WY]
#23 269 Sen. Mitch McConnell [R-KY]
#24 268 Sen. Susan Collins [R-ME]
#25 254 Sen. Bill Nelson [D-FL, 2001-2018]
#26 247 Sen. Lamar Alexander [R-TN, 2003-2020]
#27 241 Sen. Debbie Stabenow [D-MI]
#28 240 Sen. Michael Enzi [R-WY, 1997-2020]
#29 233 Sen. Dianne Feinstein [D-CA]
#29 233 Sen. Sheldon Whitehouse [D-RI]
#31 227 Sen. Maria Cantwell [D-WA]
#31 227 Sen. John Thune [R-SD]
#33 214 Sen. Mark Pryor [D-AR, 2003-2014]
#34 207 Sen. Thomas Carper [D-DE]
#35 201 Sen. Roger Wicker [R-MS]
#36 196 Sen. John “Jay” Rockefeller [D-WV, 1985-2014]
#37 192 Sen. Pat Roberts [R-KS, 1997-2020]
#38 187 Sen. James “Jim” Inhofe [R-OK]
#39 181 Sen. Carl Levin [D-MI, 1979-2014]
#40 152 Sen. Lisa Murkowski [R-AK]
#41 147 Sen. Jefferson “Jeff” Sessions [R-AL, 1997-2017]
#42 144 Sen. Barbara Mikulski [D-MD, 1987-2016]
#43 128 Sen. Charles “Chuck” Grassley [R-IA]
#44 111 Sen. Claire McCaskill [D-MO, 2007-2018]
#45 103 Sen. Daniel Coats [R-IN, 2011-2016]
#46 99 Sen. Richard Burr [R-NC]
#47 94 Sen. John McCain [R-AZ, 1987-2018]
#48 90 Sen. John “Johnny” Isakson [R-GA, 2005-2019]
#49 81 Sen. Richard Shelby [R-AL]
#50 79 Sen. Tim Johnson [D-SD, 1997-2014]
#51 63 Sen. Bob Corker [R-TN, 2007-2018]
#52 52 Sen. Thad Cochran [R-MS, 1979-2018]
#53 20 Sen. Saxby Chambliss [R-GA, 2003-2014]
#54 9 Sen. Michael “Mike” Crapo [R-ID]
Export to CSV...

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 113th Congress) was the 113th Congress (freshmen) or 112th (sophomores). Members of Congress who took office within the last few months of a Congress are considered freshmen in the next Congress as well.