John McCain represented Arizona in the U.S Senate from 1987-2018. He previously served in the U.S. House of Representatives. He identified as a Republican. He died in 2018.
2000
–Endorsed George W. Bush (R) for President (won)
–Endorsed Melissa Hart (R) for Representative of Pennsylvania, 4th District (won)
2005
–Endorsed Marilyn Brewer (R) for Representative of California, 48th District (lost special primary)
2006
–Endorsed Charlie Crist (R) for Governor of Florida (won)
–Endorsed Lincoln Chafee (R) for Senator of Rhode Island (lost general election)
–Endorsed Richard Tarrant (R) for Senator of Vermont (lost general election)
–Endorsed Mike McGavick (R) for Senator of Washington (lost general election)
–Endorsed John Sweeney (R) for Representative of New York, 20th District (lost general election)
2008
–Endorsed Saxby Chambliss (R) for Senator of Georgia (won)
–Endorsed Jim Oberweis (R) for Representative of Illinois, 14th District (lost special general election)
2010
–Endorsed Henry McMaster (R) for Governor of South Carolina (lost primary)
–Endorsed Jerry Moran (R) for Senator of Kansas (won)
–Endorsed Scott Brown (R) for Senator of Massachusetts (won)
–Endorsed Kelly Ayotte (R) for Senator of New Hampshire (won)
2012
–Endorsed Mitt Romney (R) for President (lost general election)
–Endorsed Jeff Flake (R) for Senator of Arizona (won)
–Endorsed Chris Shays (R) for Senator of Connecticut (lost primary)
–Endorsed Richard Lugar (R) for Senator of Indiana (lost primary)
–Endorsed Scott Brown (R) for Senator of Massachusetts (lost general election)
–Endorsed Josh Mandel (R) for Senator of Ohio (lost general election)
–Endorsed Howard Berman (D) for Representative of California, 30th District (lost general election)
2013
–Endorsed Gabriel Gomez (R) for Senator of Massachusetts (lost general election)
2014
–Endorsed Thad Cochran (R) for Senator of Mississippi (won)
–Endorsed Mike Enzi (R) for Senator of Wyoming (won)
–Endorsed Elan Carr (R) for Representative of California, 33rd District (lost general election)
–Endorsed David Jolly (R) for Representative of Florida, 13th District (won)
–Endorsed Lee Zeldin (R) for Representative of New York, 1st District (won)
2016
–Endorsed Mark Kirk (R) for Senator of Illinois (lost general election)
–Endorsed Pat Toomey (R) for Senator of Pennsylvania (won)
–Endorsed Ron Johnson (R) for Senator of Wisconsin (won)
The Endorsement Project 