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    ‘Party unity vote’ percentage among senators

    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