How often senators vote with their party

Share of party-line votes (roll calls where most Democrats and most Republicans voted on opposite sides) on which the member voted with their own party's majority, 119th Congress. Counted from Voteview's roll-call records. Members with fewer than 50 party-line votes so far aren't ranked. Source.

#	Senator	% of party-line votes
1	Alan Armstrong Republican · Oklahoma	100.0%
1	Marsha Blackburn Republican · Tennessee	100.0%
1	John Cornyn Republican · Texas	100.0%
1	Bill Hagerty Republican · Tennessee	100.0%
1	Angus S., Jr. King Independent · Maine	100.0%
1	Roger Marshall Republican · Kansas	100.0%
1	Bernie Moreno Republican · Ohio	100.0%
1	James E. Risch Republican · Idaho	100.0%
1	Bernard Sanders Independent · Vermont	100.0%
1	Tina Smith Democrat · Minnesota	100.0%
1	Chris Van Hollen Democrat · Maryland	100.0%
12	Jim Banks Republican · Indiana	99.9%
12	John Barrasso Republican · Wyoming	99.9%
12	Mike Crapo Republican · Idaho	99.9%
12	Ted Cruz Republican · Texas	99.9%
12	Steve Daines Republican · Montana	99.9%
12	James C. Justice Republican · West Virginia	99.9%
12	Cynthia M. Lummis Republican · Wyoming	99.9%
12	David McCormick Republican · Pennsylvania	99.9%
12	Patty Murray Democrat · Washington	99.9%
12	Eric Schmitt Republican · Missouri	99.9%
12	Tim Scott Republican · South Carolina	99.9%
23	Katie Boyd Britt Republican · Alabama	99.8%
23	Tom Cotton Republican · Arkansas	99.8%
23	John R. Curtis Republican · Utah	99.8%
23	Joni Ernst Republican · Iowa	99.8%
23	John Hoeven Republican · North Dakota	99.8%
23	Ron Johnson Republican · Wisconsin	99.8%
23	James Lankford Republican · Oklahoma	99.8%
23	Edward J. Markey Democrat · Massachusetts	99.8%
23	Christopher Murphy Democrat · Connecticut	99.8%
23	Tim Sheehy Republican · Montana	99.8%
23	Elizabeth Warren Democrat · Massachusetts	99.8%
34	Tommy Tuberville Republican · Alabama	99.7%
35	Ted Budd Republican · North Carolina	99.6%
35	Pete Ricketts Republican · Nebraska	99.6%
37	Lisa Blunt Rochester Democrat · Delaware	99.5%
37	Kevin Cramer Republican · North Dakota	99.5%
37	Jeff Merkley Democrat · Oregon	99.5%
37	Ashley Moody Republican · Florida	99.5%
37	Rick Scott Republican · Florida	99.5%
37	Ron Wyden Democrat · Oregon	99.5%
37	Todd Young Republican · Indiana	99.5%
44	Deb Fischer Republican · Nebraska	99.4%
44	Chuck Grassley Republican · Iowa	99.4%
44	John Kennedy Republican · Louisiana	99.4%
44	Mike Lee Republican · Utah	99.4%
48	Shelley Moore Capito Republican · West Virginia	99.3%
48	Cindy Hyde-Smith Republican · Mississippi	99.3%
50	John Boozman Republican · Arkansas	99.2%
50	Jon Husted Republican · Ohio	99.2%
52	Mike Rounds Republican · South Dakota	99.0%
52	Roger F. Wicker Republican · Mississippi	99.0%
54	Charles E. Schumer Democrat · New York	98.8%
55	Richard Blumenthal Democrat · Connecticut	98.7%
55	Mazie K. Hirono Democrat · Hawaii	98.7%
55	Brian Schatz Democrat · Hawaii	98.7%
58	Jerry Moran Republican · Kansas	98.5%
59	Tammy Duckworth Democrat · Illinois	98.3%
59	Alex Padilla Democrat · California	98.3%
61	Tammy Baldwin Democrat · Wisconsin	97.9%
61	Bill Cassidy Republican · Louisiana	97.9%
63	Angela D. Alsobrooks Democrat · Maryland	97.8%
64	Maria Cantwell Democrat · Washington	97.7%
64	John Thune Republican · South Dakota	97.7%
66	Ben Ray Luján Democrat · New Mexico	97.5%
67	Cory A. Booker Democrat · New Jersey	97.1%
68	Michael F. Bennet Democrat · Colorado	96.9%
68	Peter Welch Democrat · Vermont	96.9%
70	Mitch McConnell Republican · Kentucky	96.6%
71	Thom Tillis Republican · North Carolina	96.5%
72	Dan Sullivan Republican · Alaska	96.1%
73	Jon Ossoff Democrat · Georgia	96.0%
74	Andy Kim Democrat · New Jersey	95.9%
75	Josh Hawley Republican · Missouri	95.7%
76	Kirsten E. Gillibrand Democrat · New York	95.5%
77	Adam B. Schiff Democrat · California	95.4%
78	Sheldon Whitehouse Democrat · Rhode Island	95.1%
79	Raphael G. Warnock Democrat · Georgia	94.9%
80	John W. Hickenlooper Democrat · Colorado	94.8%
81	Gary C. Peters Democrat · Michigan	94.7%
82	Jack Reed Democrat · Rhode Island	94.6%
83	Christopher A. Coons Democrat · Delaware	94.1%
83	Amy Klobuchar Democrat · Minnesota	94.1%
85	Martin Heinrich Democrat · New Mexico	93.8%
86	Richard J. Durbin Democrat · Illinois	93.4%
87	Elissa Slotkin Democrat · Michigan	92.3%
88	Ruben Gallego Democrat · Arizona	91.7%
89	Catherine Cortez Masto Democrat · Nevada	91.5%
90	Mark Kelly Democrat · Arizona	91.3%
91	Mark R. Warner Democrat · Virginia	90.3%
92	Tim Kaine Democrat · Virginia	90.0%
93	Jacky Rosen Democrat · Nevada	89.5%
94	Rand Paul Republican · Kentucky	88.2%
95	Margaret Wood Hassan Democrat · New Hampshire	87.2%
96	Jeanne Shaheen Democrat · New Hampshire	85.5%
97	Lisa Murkowski Republican · Alaska	85.3%
98	Susan M. Collins Republican · Maine	83.4%
99	John Fetterman Democrat · Pennsylvania	79.4%

Too few votes yet to rank: Darline Graham.

99 senators ranked on this measure. Updated weekly.

Other measures

Left to right · Missed votes · Bills sponsored · Bills that became law · PAC share of money · Representatives: votes with party · All rankings

Quick answers

How often senators vote with their party?: Highest: Alan Armstrong (Republican, Oklahoma, 100.0%), Marsha Blackburn (Republican, Tennessee, 100.0%) and John Cornyn (Republican, Texas, 100.0%). Lowest: John Fetterman (Democrat, Pennsylvania, 79.4%), Susan M. Collins (Republican, Maine, 83.4%) and Lisa Murkowski (Republican, Alaska, 85.3%). Share of party-line votes (roll calls where most Democrats and most Republicans voted on opposite sides) on which the member voted with their own party's majority, 119th Congress. Counted from Voteview's roll-call records. Members with fewer than 50 party-line votes so far aren't ranked.

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