2020 United States Senate special election in Arizona

Appointees • Jon Kyl, former U.S. senator, former U.S. Representative for Arizona's 4th congressional district and former Senate Minority Whip, resigned December 31, 2018 Potential candidates not appointed • Kirk Adams, incumbent chief of staff to incumbent governor of Arizona Doug Ducey and former speaker of the Arizona House of Representatives • Paul Gosar, incumbent U.S. representative for Arizona's 4th congressional district • Meghan McCain, daughter of former U.S. senator John McCain • Mick McGuire, incumbent adjutant general of the Arizona National Guard • Karrin Taylor Robson, businesswoman and incumbent member of the Arizona Board of Regents • John Shadegg, former U.S. representative for Arizona's 3rd congressional district • Kelli Ward, former candidate for U.S. Senate in 2016 and 2018 • Grant Woods, former Republican Arizona Attorney General and former congressional chief of staff to former U.S. senator John McCain ==Republican primary==

Incumbent McSally faced one challenger: Daniel McCarthy, a skincare company executive. McCarthy's independent wealth was expected to set up a bruising and expensive primary campaign; however, McSally won the primary in a landslide. Candidates Nominee • Martha McSally, incumbent U.S. senator and former U.S. Representative for Arizona's 2nd congressional district Eliminated in primary • Sean Lyons (as a write-in candidate) Withdrawn • Craig Brittain, former revenge porn site operator • PT Burton • Mark Cavener • Floyd Getchell Declined • Kirk Adams, incumbent chief of staff to incumbent governor of Arizona Doug Ducey and former Speaker of the Arizona House of Representatives • Joe Arpaio, former Sheriff of Maricopa County and candidate for U.S. Senate in 2018 (ran for Maricopa County Sheriff) • Doug Ducey, governor of Arizona • Paul Gosar, U.S. representative for (ran for re-election) • Jon Kyl, former two-time U.S. senator, former U.S. Representative for , and former Senate Minority Whip • Blake Masters, president of the Thiel Foundation • Curt Schilling, former Major League Baseball player and Blaze Media commentator • Fife Symington, former governor of Arizona Endorsements Primary results ==Democratic primary==

Candidates Nominee • Mark Kelly, retired astronaut, engineer, retired U.S. Navy captain, husband of former U.S. Representative Gabby Giffords Eliminated in primary • Bo "Heir Archy" Garcia (as a write-in candidate) (switched to Democratic general election write-in candidacy) • Sheila Bilyeu, Democratic candidate for the 2020 United States Senate election in Oklahoma • Juan Angel Vasquez Declined • Ruben Gallego, incumbent U.S. representative for Arizona's 7th congressional district (ran for re-election, endorsed Kelly) • Katie Hobbs, Secretary of State of Arizona • Grant Woods, former Republican Arizona Attorney General and former congressional chief of staff to former U.S. senator John McCain Endorsements Primary results ==Libertarian primary==

Neither one of the write-in candidates received enough votes to secure the Libertarian nomination in the general election. Write-in candidates Eliminated in primary • Barry Hess, write-in Libertarian candidate in the 2018 United States Senate election in Arizona and Libertarian nominee in the 2014 Arizona gubernatorial election • Alan White Primary results ==Other candidates==

General election write-in candidates Declared Republican • Edward Davida • Adam Chilton ==General election==

Debates • Complete video of debate, October 6, 2020 Predictions Post-primary endorsements Polling Graphical summary Aggregate polls with Daniel McCarthy and Mark Kelly with Ruben Gallego on whether McSally deserves to be re-elected with generic Republican and generic Democrat Results {{align|right| By county Counties that flipped from Republican to Democratic • Maricopa (largest municipality: Phoenix) By congressional district Kelly won five of nine congressional districts. ==See also==