Who is the most bipartisan U.S. Senator?

Susan Collins (Republican - ME) has the lowest party unity score at 66.1%, meaning they vote against their own party more than any other senator.

Which senator misses the most votes?

Michael Bennet (Democrat - CO) has missed 46.6% of roll call votes in the current Congress.

Which state has the most divided Senate delegation?

State delegation agreement rates vary widely. States with split-party delegations (one Democrat, one Republican) typically show the lowest agreement rates, while same-party delegations often agree on over 90% of votes.

U.S. Senate Voting Analysis (119th Congress)

How does every senator vote? Party unity scores, bipartisan records, and missed vote rates — calculated from 118 roll call votes in the current Congress.

Republican Average

53 senators

Party Unity 97.1%

Avg. Missed Votes 2.7%

Democrat Average

45 senators

Party Unity 98.6%

Avg. Missed Votes 2.8%

Independent Average

2 senators

Party Unity 98.3%

Avg. Missed Votes 2.1%

All Senators — Voting Statistics

Sorted by most bipartisan (lowest party unity). Click any column header to re-sort.

Senator ↕	State ↕	Party ↕	Party Unity ▲	Missed Votes ↕	Total Votes ↕
Susan Collins	ME	Republican	66.1%	0.0%	118
John Fetterman	PA	Democrat	78.4%	5.9%	111
Lisa Murkowski	AK	Republican	78.9%	3.4%	114
Dan Sullivan	AK	Republican	85.6%	0.0%	118
Rand Paul	KY	Republican	87.6%	4.2%	113
Thom Tillis	NC	Republican	89.2%	13.6%	102
Bill Cassidy	LA	Republican	90.6%	0.8%	117
Jon Husted	OH	Republican	94.1%	0.0%	118
Jeanne Shaheen	NH	Democrat	94.6%	5.1%	112
Josh Hawley	MO	Republican	95.5%	5.1%	112
Sheldon Whitehouse	RI	Democrat	95.7%	0.8%	117
Maggie Hassan	NH	Democrat	95.8%	0.0%	118
Jerry Moran	KS	Republican	96.4%	5.1%	112
Ashley Moody	FL	Republican	96.5%	3.4%	114
Martin Heinrich	NM	Democrat	96.6%	0.0%	118
Chris Coons	DE	Democrat	97.3%	5.1%	112
Mitch McConnell	KY	Republican	97.4%	3.4%	114
Amy Klobuchar	MN	Democrat	97.4%	1.7%	116
Catherine Cortez Masto	NV	Democrat	97.5%	0.0%	118
Mike Lee	UT	Republican	97.5%	0.0%	118
Jack Reed	RI	Democrat	97.5%	0.0%	118
Rick Scott	FL	Republican	97.5%	0.0%	118
Tommy Tuberville	AL	Republican	98.0%	14.4%	101
Dick Durbin	IL	Democrat	98.2%	3.4%	114
Tim Kaine	VA	Democrat	98.2%	4.2%	113
John Curtis	UT	Republican	98.2%	5.9%	111
Ruben Gallego	AZ	Democrat	98.2%	5.9%	111
Bernie Sanders	VT	Independent	98.3%	3.4%	116
Jacky Rosen	NV	Democrat	98.3%	0.8%	117
John Kennedy	LA	Republican	98.3%	0.0%	118
Chuck Schumer	NY	Democrat	98.3%	0.0%	118
Angus King	ME	Independent	98.3%	0.8%	119
Kirsten Gillibrand	NY	Democrat	98.3%	0.8%	117
Todd Young	IN	Republican	98.3%	0.8%	117
Ron Johnson	WI	Republican	98.3%	0.0%	118
Ted Cruz	TX	Republican	98.3%	0.8%	117
Eric Schmitt	MO	Republican	98.3%	0.8%	117
Richard Blumenthal	CT	Democrat	98.3%	0.0%	118
Mark Warner	VA	Democrat	99.0%	17.8%	97
Alan Armstrong	OK	Republican	99.0%	0.0%	101
Cynthia Lummis	WY	Republican	99.1%	3.4%	114
Gary Peters	MI	Democrat	99.1%	1.7%	116
David McCormick	PA	Republican	99.1%	1.7%	116
Joni Ernst	IA	Republican	99.1%	4.2%	113
Tim Sheehy	MT	Republican	99.1%	4.2%	113
John Cornyn	TX	Republican	99.1%	4.2%	113
Katie Britt	AL	Republican	99.1%	0.8%	117
Kevin Cramer	ND	Republican	99.1%	4.2%	113
Bill Hagerty	TN	Republican	99.1%	4.2%	113
Bernie Moreno	OH	Republican	99.1%	1.7%	116
Jim Banks	IN	Republican	99.1%	0.8%	117
Cindy Hyde-Smith	MS	Republican	99.1%	4.2%	113
Mike Rounds	SD	Republican	99.1%	3.4%	114
Marsha Blackburn	TN	Republican	99.1%	5.1%	112
John Barrasso	WY	Republican	99.2%	0.0%	118
John Hoeven	ND	Republican	99.2%	0.0%	118
Ted Budd	NC	Republican	99.2%	0.0%	118
John Thune	SD	Republican	99.2%	0.0%	118
Chris Van Hollen	MD	Democrat	100.0%	0.8%	117
Angela Alsobrooks	MD	Democrat	100.0%	2.5%	115
Mark Kelly	AZ	Democrat	100.0%	3.4%	114
Elizabeth Warren	MA	Democrat	100.0%	0.0%	118
Jim Risch	ID	Republican	100.0%	4.2%	113
Jon Ossoff	GA	Democrat	100.0%	0.8%	117
Mike Crapo	ID	Republican	100.0%	0.8%	117
Michael Bennet	CO	Democrat	100.0%	46.6%	63
Peter Welch	VT	Democrat	100.0%	0.0%	118
Maria Cantwell	WA	Democrat	100.0%	0.0%	118
Ed Markey	MA	Democrat	100.0%	0.0%	118
Chris Murphy	CT	Democrat	100.0%	0.0%	118
Tina Smith	MN	Democrat	100.0%	3.4%	114
Mazie Hirono	HI	Democrat	100.0%	0.0%	118
Adam Schiff	CA	Democrat	100.0%	0.8%	117
Lisa Blunt Rochester	DE	Democrat	100.0%	0.0%	118
Raphael Warnock	GA	Democrat	100.0%	1.7%	116
Patty Murray	WA	Democrat	100.0%	3.4%	114
Tom Cotton	AR	Republican	100.0%	0.0%	118
Deb Fischer	NE	Republican	100.0%	0.8%	117
Ben Luján	NM	Democrat	100.0%	0.8%	117
Roger Marshall	KS	Republican	100.0%	0.0%	118
Andy Kim	NJ	Democrat	100.0%	0.0%	118
Chuck Grassley	IA	Republican	100.0%	16.9%	98
James Lankford	OK	Republican	100.0%	0.0%	118
Ron Wyden	OR	Democrat	100.0%	0.0%	118
Jeff Merkley	OR	Democrat	100.0%	0.8%	117
Tammy Duckworth	IL	Democrat	100.0%	0.0%	118
Brian Schatz	HI	Democrat	100.0%	2.5%	115
John Hickenlooper	CO	Democrat	100.0%	0.0%	118
Tim Scott	SC	Republican	100.0%	0.0%	118
John Boozman	AR	Republican	100.0%	0.0%	118
Jim Justice	WV	Republican	100.0%	0.8%	117
Shelley Capito	WV	Republican	100.0%	1.7%	116
Tammy Baldwin	WI	Democrat	100.0%	0.0%	118
Cory Booker	NJ	Democrat	100.0%	4.2%	112
Elissa Slotkin	MI	Democrat	100.0%	0.8%	117
Alex Padilla	CA	Democrat	100.0%	0.8%	117
Pete Ricketts	NE	Republican	100.0%	5.1%	112
Steve Daines	MT	Republican	100.0%	3.4%	114
Roger Wicker	MS	Republican	100.0%	1.7%	116
Lindsey Graham	SC	Republican	100.0%	5.9%	111