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‘Party unity vote’ percentage among senators

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The following table measures the percent of time, since January 2011, that each senator has voted with his or her party when a majority of the party voted one way and the majority of the opposing party voted the other way. This percentage, known as a “party unity vote,” is intended to measure how often a senator is willing to cross the aisle when the parties are at odds.

Collins45%
Scott Brown47%
Snowe53%
Murkowski66%
Cochran72%
Hoeven72%
Manchin73%
Ben Nelson75%
McCaskill77%
Blunt79%
Kirk81%
Lugar81%
Heller83%
Johanns83%
Pryor84%
Webb84%
Lieberman84%
Alexander85%
Hutchison85%
Wicker85%
Moran86%
Roberts86%
Graham87%
Grassley87%
Hagan88%
Landrieu88%
Tester88%
Warner88%
Boozman88%
Portman88%
Begich90%
Benet90%
Carper90%
Bill Nelson90%
Mark Udall90%
Shelby90%
Thune90%
Baucus91%
Casey91%
Stabenow91%
Coats91%
Isakson91%
Vitter91%
Conrad92%
Klobuchar92%
Kohl92%
Corker92%
Paul92%
Rubio92%
Cantwell93%
Reid93%
Ayotte93%
Chambliss93%
Lee93%
Sessions93%
Coons94%
Shaheen94%
Barrasso94%
Burr94%
DeMint94%
Enzi94%
Inhofe94%
Inouye95%
Kerry95%
Levin95%
Menendez95%
Sanders95%
Coburn95%
Crapo95%
Kyl95%
McCain95%
McConnell95%
Risch95%
Toomey95%
Akaka96%
Blumenthal96%
Feinstein96%
Johnson96%
Merkley96%
Murray96%
Reed96%
Wyden96%
Hatch96%
Bingaman97%
Sherrod Brown97%
Durbin97%
Gillibrand97%
Harkin97%
Lautenberg97%
Leahy97%
Mikulski97%
Schumer97%
Whitehouse97%
Cornyn97%
Boxer98%
Franken98%
Rockefeller98%
Ron Johnson98%
Cardin99%
Tom Udall100%

Source: Bloomberg Government
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