Who is the most bipartisan U.S. Senator?

John Fetterman (Democrat - PA) has the lowest party unity score at 80.6%, meaning they vote against their own party more than any other senator.

Which senator misses the most votes?

Darline Graham Nordone (Republican - SC) has missed 21.7% 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 891 roll call votes in the current Congress. Browse every individual roll-call vote →

Across 891 roll-call votes this Congress, the most independent voter is John Fetterman (Democrat–PA), who sides with their own party just 80.6% of the time.

At the other end, Darline Graham Nordone is the most party-loyal at 100.0%. Darline Graham Nordone has missed the most roll-call votes, at 21.7%. A party-unity score measures how often a senator votes with their own party's majority — a higher score is more partisan, not better or worse.

Republican Average

53 senators

Party Unity 97.9%

Avg. Missed Votes 3.1%

Democrat Average

45 senators

Party Unity 94.4%

Avg. Missed Votes 3%

Independent Average

2 senators

Party Unity 91.3%

Avg. Missed Votes 4.4%

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 ↕
John Fetterman	PA	Democrat	80.6%	6.6%	832
Susan Collins	ME	Republican	84.3%	0.0%	891
Rand Paul	KY	Republican	84.8%	4.6%	847
Lisa Murkowski	AK	Republican	85.8%	4.3%	853
Jeanne Shaheen	NH	Democrat	86.2%	4.0%	855
Maggie Hassan	NH	Democrat	87.3%	1.6%	877
Angus King	ME	Independent	87.6%	1.6%	877
Tim Kaine	VA	Democrat	89.9%	1.2%	880
Jacky Rosen	NV	Democrat	90.0%	1.5%	878
Mark Warner	VA	Democrat	90.6%	4.3%	853
Catherine Cortez Masto	NV	Democrat	91.5%	2.0%	873
Mark Kelly	AZ	Democrat	91.6%	5.6%	841
Ruben Gallego	AZ	Democrat	92.0%	12.8%	777
Elissa Slotkin	MI	Democrat	92.4%	2.8%	866
Dick Durbin	IL	Democrat	93.0%	2.7%	867
Martin Heinrich	NM	Democrat	93.3%	3.8%	857
Adam Schiff	CA	Democrat	93.7%	2.5%	869
Chris Coons	DE	Democrat	94.0%	5.3%	844
Andy Kim	NJ	Democrat	94.2%	0.9%	883
Jack Reed	RI	Democrat	94.2%	0.9%	883
Amy Klobuchar	MN	Democrat	94.3%	1.5%	878
Gary Peters	MI	Democrat	94.5%	2.1%	872
Raphael Warnock	GA	Democrat	94.6%	2.9%	865
John Hickenlooper	CO	Democrat	94.6%	1.1%	881
Cory Booker	NJ	Democrat	94.9%	4.5%	845
Bernie Sanders	VT	Independent	95.0%	7.1%	828
Peter Welch	VT	Democrat	95.0%	5.9%	838
Sheldon Whitehouse	RI	Democrat	95.1%	3.7%	858
Kirsten Gillibrand	NY	Democrat	95.1%	1.9%	874
Josh Hawley	MO	Republican	95.4%	4.2%	854
Ed Markey	MA	Democrat	95.4%	0.8%	884
Elizabeth Warren	MA	Democrat	95.4%	1.6%	877
Jon Ossoff	GA	Democrat	95.6%	5.7%	840
Alex Padilla	CA	Democrat	95.7%	3.7%	858
Dan Sullivan	AK	Republican	96.0%	2.2%	871
Chris Murphy	CT	Democrat	96.0%	2.6%	868
Thom Tillis	NC	Republican	96.2%	12.1%	783
Michael Bennet	CO	Democrat	96.3%	9.2%	809
Mazie Hirono	HI	Democrat	96.4%	0.4%	887
Mike Lee	UT	Republican	96.5%	2.9%	865
Jeff Merkley	OR	Democrat	96.5%	0.8%	884
Brian Schatz	HI	Democrat	96.5%	1.1%	881
Mitch McConnell	KY	Republican	96.6%	14.9%	758
Ben Luján	NM	Democrat	96.7%	1.3%	879
Angela Alsobrooks	MD	Democrat	96.8%	1.6%	877
Bill Cassidy	LA	Republican	97.2%	5.3%	844
Chris Van Hollen	MD	Democrat	97.2%	1.5%	878
Rick Scott	FL	Republican	97.2%	0.2%	889
Tammy Baldwin	WI	Democrat	97.3%	0.1%	888
Ron Wyden	OR	Democrat	97.3%	1.9%	874
Tammy Duckworth	IL	Democrat	97.4%	6.7%	831
Maria Cantwell	WA	Democrat	97.5%	0.2%	889
Ron Johnson	WI	Republican	97.5%	1.3%	879
Richard Blumenthal	CT	Democrat	97.7%	1.1%	881
Lisa Blunt Rochester	DE	Democrat	97.9%	0.7%	885
John Thune	SD	Republican	97.9%	0.1%	890
Chuck Schumer	NY	Democrat	98.0%	0.4%	887
Tina Smith	MN	Democrat	98.1%	4.6%	850
Jerry Moran	KS	Republican	98.1%	5.5%	842
Ted Cruz	TX	Republican	98.2%	5.3%	844
Alan Armstrong	OK	Republican	98.2%	0.0%	167
Patty Murray	WA	Democrat	98.3%	5.7%	840
John Kennedy	LA	Republican	98.3%	1.8%	875
Todd Young	IN	Republican	98.4%	0.9%	883
Tommy Tuberville	AL	Republican	98.4%	6.3%	835
Cynthia Lummis	WY	Republican	98.5%	3.4%	861
Ted Budd	NC	Republican	98.5%	2.8%	866
Ashley Moody	FL	Republican	98.7%	1.2%	872
Jon Husted	OH	Republican	98.8%	0.0%	883
Roger Wicker	MS	Republican	98.8%	3.6%	859
Mike Rounds	SD	Republican	98.9%	0.9%	883
John Curtis	UT	Republican	98.9%	2.1%	872
Shelley Capito	WV	Republican	99.1%	1.9%	874
Joni Ernst	IA	Republican	99.1%	2.1%	872
Bill Hagerty	TN	Republican	99.1%	3.5%	860
John Boozman	AR	Republican	99.2%	1.6%	877
Jim Banks	IN	Republican	99.2%	1.2%	880
Chuck Grassley	IA	Republican	99.2%	2.7%	867
Cindy Hyde-Smith	MS	Republican	99.2%	1.9%	874
Deb Fischer	NE	Republican	99.2%	1.0%	882
Eric Schmitt	MO	Republican	99.3%	1.2%	880
Katie Britt	AL	Republican	99.3%	2.4%	870
John Barrasso	WY	Republican	99.3%	0.4%	887
Bernie Moreno	OH	Republican	99.3%	0.6%	886
Marsha Blackburn	TN	Republican	99.4%	5.8%	839
Kevin Cramer	ND	Republican	99.4%	3.6%	859
James Lankford	OK	Republican	99.4%	0.7%	885
David McCormick	PA	Republican	99.5%	2.9%	865
Tim Sheehy	MT	Republican	99.5%	2.7%	867
Roger Marshall	KS	Republican	99.5%	0.8%	884
Pete Ricketts	NE	Republican	99.5%	1.0%	882
John Hoeven	ND	Republican	99.5%	1.0%	882
Mike Crapo	ID	Republican	99.7%	1.2%	880
John Cornyn	TX	Republican	99.7%	1.1%	881
Jim Risch	ID	Republican	99.7%	2.9%	865
Steve Daines	MT	Republican	99.7%	2.8%	866
Tim Scott	SC	Republican	99.8%	3.0%	864
Tom Cotton	AR	Republican	99.8%	1.6%	877
Jim Justice	WV	Republican	99.8%	4.3%	851
Darline Graham Nordone	SC	Republican	100.0%	21.7%	16