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2018 Report Cards
Senate Democrats / Cosponsors

These statistics dissect the legislative records of Members of Congress during the 115th Congress (Jan 3, 2017-Jan 3, 2019), as of Jan 20, 2019.

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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The total number of cosponsors joining the bills written by each legislator in the 115th Congress.

Senate Democrats
most cosponsors
#1 905 Sen. Benjamin Cardin [D-MD]
#2 642 Sen. Patty Murray [D-WA]
#3 638 Sen. Robert “Bob” Menendez [D-NJ]
#4 596 Sen. Dianne Feinstein [D-CA]
#5 584 Sen. Sherrod Brown [D-OH]
#6 564 Sen. Elizabeth Warren [D-MA]
#7 557 Sen. Tammy Baldwin [D-WI]
#8 522 Sen. Edward “Ed” Markey [D-MA]
#9 505 Sen. Jon Tester [D-MT]
#10 503 Sen. Amy Klobuchar [D-MN]
#11 500 Sen. Ron Wyden [D-OR]
#12 449 Sen. Richard Blumenthal [D-CT]
#13 442 Sen. Cory Booker [D-NJ]
#13 442 Sen. Robert “Bob” Casey [D-PA]
#15 433 Sen. Mazie Hirono [D-HI]
#16 423 Sen. Richard Durbin [D-IL]
#17 407 Sen. Jeff Merkley [D-OR]
#18 401 Sen. Christopher Coons [D-DE]
#19 396 Sen. Jeanne Shaheen [D-NH]
#20 390 Sen. Brian Schatz [D-HI]
#21 384 Sen. Bill Nelson [D-FL, 2001-2018]
#22 363 Vice President Kamala Harris [D]
#23 358 Sen. Heidi Heitkamp [D-ND, 2013-2018]
#24 349 Sen. Kirsten Gillibrand [D-NY]
#25 336 Sen. Sheldon Whitehouse [D-RI]
#26 301 Sen. Timothy “Tim” Kaine [D-VA]
#27 296 Sen. Mark Warner [D-VA]
#28 294 Sen. Tom Udall [D-NM, 2009-2020]
#29 275 Sen. Maria Cantwell [D-WA]
#30 264 Sen. John “Jack” Reed [D-RI]
#31 260 Sen. Tammy Duckworth [D-IL]
#32 258 Sen. Joe Manchin [D-WV]
#33 224 Sen. Debbie Stabenow [D-MI]
#34 208 Sen. Christopher Murphy [D-CT]
#35 193 Sen. Gary Peters [D-MI]
#36 180 Sen. Thomas Carper [D-DE]
#37 178 Sen. Claire McCaskill [D-MO, 2007-2018]
#38 177 Sen. Joe Donnelly [D-IN, 2013-2018]
#39 176 Sen. Patrick Leahy [D-VT]
#40 149 Sen. Michael Bennet [D-CO]
#41 147 Sen. Charles “Chuck” Schumer [D-NY]
#42 110 Sen. Chris Van Hollen [D-MD]
#43 108 Sen. Tina Smith [D-MN]
#44 98 Sen. Martin Heinrich [D-NM]
#45 96 Sen. Catherine Cortez Masto [D-NV]
#46 51 Sen. Doug Jones [D-AL, 2018-2020]
#47 37 Sen. Margaret “Maggie” Hassan [D-NH]
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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 the 115th Congress) was the 115th Congress (freshmen) or 114th (sophomores). Members of Congress who took office within the last few months of a Congress are considered freshmen in the next Congress as well.