[1] Although not term-limited,[1] incumbent mayor Bob Walkup did not run for re-election,[2] leaving Tucson's chief executive office open and competitive, with seven candidates filing to run in the race.

[3] Because elections in Tucson are partisan in nature, party primaries were held on August 30, 2011.

[3] Current Republican Mayor Bob Walkup did not run for re-election to a third term.

[6] Originally political newcomer Marshall Home had registered to challenge incumbent Jonathan Rothschild.

[3] Republicans nominated Rick Grinnell Originally, Pat Darcy had registered to run as an independent.