Who is the most bipartisan U.S. Senator?

John Fetterman (Democrat - PA) has the lowest party unity score at 80.4%, 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 50.0% 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 876 roll call votes in the current Congress. Browse every individual roll-call vote →

Across 876 roll-call votes this Congress, the most independent voter is John Fetterman (Democrat–PA), who sides with their own party just 80.4% 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 50.0%. 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 98%

Avg. Missed Votes 3.6%

Democrat Average

45 senators

Party Unity 94.4%

Avg. Missed Votes 3%

Independent Average

2 senators

Party Unity 91.5%

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	80.4%	6.7%	817
Susan Collins	ME	Republican	84.5%	0.0%	876
Rand Paul	KY	Republican	85.1%	4.7%	832
Lisa Murkowski	AK	Republican	85.9%	4.2%	839
Jeanne Shaheen	NH	Democrat	86.1%	4.1%	840
Maggie Hassan	NH	Democrat	87.4%	1.6%	862
Angus King	ME	Independent	87.5%	1.5%	863
Jacky Rosen	NV	Democrat	90.0%	1.5%	863
Tim Kaine	VA	Democrat	90.3%	1.3%	865
Mark Warner	VA	Democrat	90.5%	4.3%	838
Mark Kelly	AZ	Democrat	91.4%	5.6%	827
Catherine Cortez Masto	NV	Democrat	91.6%	2.1%	858
Ruben Gallego	AZ	Democrat	91.9%	12.7%	765
Elissa Slotkin	MI	Democrat	92.3%	2.7%	852
Dick Durbin	IL	Democrat	93.1%	2.7%	852
Martin Heinrich	NM	Democrat	93.5%	3.9%	842
Adam Schiff	CA	Democrat	93.7%	2.5%	854
Chris Coons	DE	Democrat	94.0%	5.3%	830
Jack Reed	RI	Democrat	94.1%	0.9%	868
Andy Kim	NJ	Democrat	94.1%	0.9%	868
Amy Klobuchar	MN	Democrat	94.2%	1.1%	866
Gary Peters	MI	Democrat	94.4%	2.2%	857
John Hickenlooper	CO	Democrat	94.5%	1.1%	866
Raphael Warnock	GA	Democrat	94.5%	2.9%	851
Cory Booker	NJ	Democrat	94.8%	4.5%	831
Peter Welch	VT	Democrat	95.0%	5.8%	825
Sheldon Whitehouse	RI	Democrat	95.1%	3.8%	843
Kirsten Gillibrand	NY	Democrat	95.2%	1.9%	859
Bernie Sanders	VT	Independent	95.4%	7.2%	813
Josh Hawley	MO	Republican	95.5%	4.2%	839
Jon Ossoff	GA	Democrat	95.6%	5.8%	825
Ed Markey	MA	Democrat	95.6%	0.7%	870
Elizabeth Warren	MA	Democrat	95.8%	1.6%	862
Alex Padilla	CA	Democrat	95.8%	3.8%	843
Dan Sullivan	AK	Republican	95.9%	2.3%	856
Chris Murphy	CT	Democrat	96.0%	2.6%	853
Thom Tillis	NC	Republican	96.1%	11.9%	772
Michael Bennet	CO	Democrat	96.2%	9.4%	794
Mike Lee	UT	Republican	96.5%	3.0%	850
Brian Schatz	HI	Democrat	96.5%	1.1%	866
Mitch McConnell	KY	Republican	96.6%	13.6%	757
Ben Luján	NM	Democrat	96.6%	1.4%	864
Mazie Hirono	HI	Democrat	96.6%	0.3%	873
Jeff Merkley	OR	Democrat	96.7%	0.8%	869
Angela Alsobrooks	MD	Democrat	96.8%	1.6%	862
Chris Van Hollen	MD	Democrat	97.1%	1.5%	863
Rick Scott	FL	Republican	97.1%	0.2%	874
Ron Wyden	OR	Democrat	97.3%	1.9%	859
Tammy Duckworth	IL	Democrat	97.4%	6.8%	816
Tammy Baldwin	WI	Democrat	97.4%	0.1%	873
Maria Cantwell	WA	Democrat	97.5%	0.2%	874
Ron Johnson	WI	Republican	97.5%	1.1%	866
Bill Cassidy	LA	Republican	97.6%	5.4%	829
Richard Blumenthal	CT	Democrat	97.8%	1.1%	866
John Thune	SD	Republican	97.8%	0.1%	875
Chuck Schumer	NY	Democrat	97.9%	0.5%	872
Lisa Blunt Rochester	DE	Democrat	98.0%	0.7%	870
Tina Smith	MN	Democrat	98.1%	4.7%	835
Jerry Moran	KS	Republican	98.2%	5.6%	827
Ted Cruz	TX	Republican	98.2%	5.4%	829
Patty Murray	WA	Democrat	98.3%	5.8%	825
John Kennedy	LA	Republican	98.4%	1.8%	860
Tommy Tuberville	AL	Republican	98.4%	6.4%	820
Todd Young	IN	Republican	98.5%	0.9%	868
Alan Armstrong	OK	Republican	98.6%	0.0%	143
Cynthia Lummis	WY	Republican	98.6%	3.0%	850
Ted Budd	NC	Republican	98.6%	2.9%	851
Ashley Moody	FL	Republican	98.7%	1.3%	857
Jon Husted	OH	Republican	98.7%	0.0%	868
John Curtis	UT	Republican	98.8%	2.2%	857
Roger Wicker	MS	Republican	98.8%	3.7%	844
Mike Rounds	SD	Republican	99.0%	0.9%	868
Cindy Hyde-Smith	MS	Republican	99.2%	1.8%	860
John Boozman	AR	Republican	99.2%	1.5%	863
Bill Hagerty	TN	Republican	99.2%	3.5%	845
Joni Ernst	IA	Republican	99.2%	2.2%	857
Shelley Capito	WV	Republican	99.2%	1.9%	859
Eric Schmitt	MO	Republican	99.3%	1.1%	866
Bernie Moreno	OH	Republican	99.3%	0.6%	871
Chuck Grassley	IA	Republican	99.3%	2.7%	852
Jim Banks	IN	Republican	99.3%	1.3%	865
Deb Fischer	NE	Republican	99.3%	1.0%	867
John Barrasso	WY	Republican	99.3%	0.5%	872
James Lankford	OK	Republican	99.4%	0.5%	872
Katie Britt	AL	Republican	99.4%	2.4%	855
Kevin Cramer	ND	Republican	99.4%	3.4%	846
Roger Marshall	KS	Republican	99.5%	0.7%	870
Marsha Blackburn	TN	Republican	99.5%	5.3%	830
Tim Sheehy	MT	Republican	99.5%	2.7%	852
David McCormick	PA	Republican	99.5%	3.0%	850
John Hoeven	ND	Republican	99.5%	1.0%	867
Jim Risch	ID	Republican	99.6%	2.9%	851
Steve Daines	MT	Republican	99.6%	2.9%	851
Mike Crapo	ID	Republican	99.7%	1.3%	865
Pete Ricketts	NE	Republican	99.7%	1.0%	867
Tom Cotton	AR	Republican	99.8%	1.5%	863
Tim Scott	SC	Republican	99.8%	3.1%	849
John Cornyn	TX	Republican	99.8%	1.1%	866
Jim Justice	WV	Republican	99.8%	4.3%	836
Darline Graham Nordone	SC	Republican	100.0%	50.0%	4