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 22.7% 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 890 roll call votes in the current Congress. Browse every individual roll-call vote →

Across 890 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 22.7%. 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%	831
Susan Collins	ME	Republican	84.3%	0.0%	890
Rand Paul	KY	Republican	84.8%	4.6%	846
Lisa Murkowski	AK	Republican	85.8%	4.2%	853
Jeanne Shaheen	NH	Democrat	86.2%	4.0%	854
Maggie Hassan	NH	Democrat	87.3%	1.6%	876
Angus King	ME	Independent	87.6%	1.6%	876
Tim Kaine	VA	Democrat	89.9%	1.2%	879
Jacky Rosen	NV	Democrat	90.0%	1.5%	877
Mark Warner	VA	Democrat	90.6%	4.3%	852
Catherine Cortez Masto	NV	Democrat	91.5%	2.0%	872
Mark Kelly	AZ	Democrat	91.5%	5.6%	840
Ruben Gallego	AZ	Democrat	92.0%	12.8%	776
Elissa Slotkin	MI	Democrat	92.4%	2.8%	865
Dick Durbin	IL	Democrat	93.0%	2.7%	866
Martin Heinrich	NM	Democrat	93.3%	3.8%	856
Adam Schiff	CA	Democrat	93.7%	2.5%	868
Chris Coons	DE	Democrat	94.0%	5.2%	844
Andy Kim	NJ	Democrat	94.2%	0.9%	882
Jack Reed	RI	Democrat	94.2%	0.9%	882
Amy Klobuchar	MN	Democrat	94.3%	1.5%	877
John Hickenlooper	CO	Democrat	94.5%	1.1%	880
Gary Peters	MI	Democrat	94.5%	2.1%	871
Raphael Warnock	GA	Democrat	94.6%	2.9%	864
Cory Booker	NJ	Democrat	94.9%	4.5%	844
Bernie Sanders	VT	Independent	95.0%	7.1%	827
Peter Welch	VT	Democrat	95.0%	6.0%	837
Sheldon Whitehouse	RI	Democrat	95.1%	3.7%	857
Kirsten Gillibrand	NY	Democrat	95.1%	1.9%	873
Josh Hawley	MO	Republican	95.4%	4.2%	853
Ed Markey	MA	Democrat	95.4%	0.8%	883
Elizabeth Warren	MA	Democrat	95.4%	1.6%	876
Jon Ossoff	GA	Democrat	95.6%	5.7%	839
Alex Padilla	CA	Democrat	95.7%	3.7%	857
Dan Sullivan	AK	Republican	96.0%	2.2%	870
Chris Murphy	CT	Democrat	96.0%	2.6%	867
Thom Tillis	NC	Republican	96.2%	12.0%	783
Michael Bennet	CO	Democrat	96.3%	9.2%	808
Mazie Hirono	HI	Democrat	96.4%	0.4%	886
Mike Lee	UT	Republican	96.5%	2.9%	864
Jeff Merkley	OR	Democrat	96.5%	0.8%	883
Brian Schatz	HI	Democrat	96.5%	1.1%	880
Mitch McConnell	KY	Republican	96.6%	14.9%	757
Ben Luján	NM	Democrat	96.7%	1.3%	878
Angela Alsobrooks	MD	Democrat	96.8%	1.6%	876
Chris Van Hollen	MD	Democrat	97.1%	1.5%	877
Bill Cassidy	LA	Republican	97.2%	5.3%	843
Rick Scott	FL	Republican	97.2%	0.2%	888
Tammy Baldwin	WI	Democrat	97.3%	0.1%	887
Ron Wyden	OR	Democrat	97.3%	1.9%	873
Tammy Duckworth	IL	Democrat	97.3%	6.7%	830
Maria Cantwell	WA	Democrat	97.5%	0.2%	888
Ron Johnson	WI	Republican	97.5%	1.3%	878
Richard Blumenthal	CT	Democrat	97.7%	1.1%	880
Lisa Blunt Rochester	DE	Democrat	97.9%	0.7%	884
John Thune	SD	Republican	97.9%	0.1%	889
Chuck Schumer	NY	Democrat	98.0%	0.4%	886
Tina Smith	MN	Democrat	98.1%	4.6%	849
Alan Armstrong	OK	Republican	98.1%	0.0%	157
Jerry Moran	KS	Republican	98.1%	5.5%	841
Ted Cruz	TX	Republican	98.2%	5.3%	843
Patty Murray	WA	Democrat	98.3%	5.7%	839
John Kennedy	LA	Republican	98.3%	1.8%	874
Todd Young	IN	Republican	98.4%	0.9%	882
Tommy Tuberville	AL	Republican	98.4%	6.3%	834
Cynthia Lummis	WY	Republican	98.5%	3.4%	860
Ted Budd	NC	Republican	98.5%	2.8%	865
Ashley Moody	FL	Republican	98.7%	1.2%	871
Jon Husted	OH	Republican	98.8%	0.0%	882
Roger Wicker	MS	Republican	98.8%	3.6%	858
Mike Rounds	SD	Republican	98.9%	0.9%	882
John Curtis	UT	Republican	98.9%	2.1%	871
Shelley Capito	WV	Republican	99.1%	1.9%	873
Joni Ernst	IA	Republican	99.1%	2.1%	871
Bill Hagerty	TN	Republican	99.1%	3.5%	859
John Boozman	AR	Republican	99.2%	1.6%	876
Jim Banks	IN	Republican	99.2%	1.2%	879
Chuck Grassley	IA	Republican	99.2%	2.7%	866
Cindy Hyde-Smith	MS	Republican	99.2%	1.9%	873
Deb Fischer	NE	Republican	99.2%	1.0%	881
Eric Schmitt	MO	Republican	99.3%	1.1%	880
Katie Britt	AL	Republican	99.3%	2.4%	869
John Barrasso	WY	Republican	99.3%	0.4%	886
Bernie Moreno	OH	Republican	99.3%	0.6%	885
Marsha Blackburn	TN	Republican	99.4%	5.8%	838
Kevin Cramer	ND	Republican	99.4%	3.5%	859
James Lankford	OK	Republican	99.4%	0.7%	884
David McCormick	PA	Republican	99.5%	2.9%	864
Tim Sheehy	MT	Republican	99.5%	2.7%	866
Roger Marshall	KS	Republican	99.5%	0.7%	884
Pete Ricketts	NE	Republican	99.5%	1.0%	881
John Hoeven	ND	Republican	99.5%	1.0%	881
Mike Crapo	ID	Republican	99.7%	1.2%	879
John Cornyn	TX	Republican	99.7%	1.1%	880
Jim Risch	ID	Republican	99.7%	2.8%	865
Steve Daines	MT	Republican	99.7%	2.8%	865
Tim Scott	SC	Republican	99.8%	3.0%	863
Tom Cotton	AR	Republican	99.8%	1.6%	876
Jim Justice	WV	Republican	99.8%	4.3%	850
Darline Graham Nordone	SC	Republican	100.0%	22.7%	15