Mayoral elections on Nov. 2 did not result in partisan changes in any of the 100 largest cities by population. Two elections are upcoming: the Atlanta, Georgia, mayoral election advanced to a Nov. 30 runoff, and New Orleans, Louisiana, will hold a mayoral election on Nov. 13, with a possible second election on Dec. 11.

Two partisan changes in top-100 mayoral offices occurred earlier in 2021:

• North Las Vegas Mayor John J. Lee announced that he was changing his party affiliation from Democratic to Republican on April 6, 2021.
• David Bronson (R) assumed office as mayor of Anchorage, Alaska on July 1, 2021, replacing nonpartisan acting mayor Austin Quinn-Davidson, who assumed office following the resignation of Ethan Berkowitz (D).

Twenty-eight of the 100 largest cities are holding mayoral elections this year. In 19 of those 28 cities, the incumbent was Democratic at the start of 2021. Seven incumbents were Republican, one was independent, and one was nonpartisan.

Currently, 63 of the 100 largest cities’ mayors are Democrats, 26 are Republicans, and 10 are either nonpartisan or independent. One mayor’s affiliation is unknown.

In cities where mayoral elections are nonpartisan, Ballotpedia uses one or more of the following sources to identify each officeholder’s partisan affiliation: (1) direct communication from the officeholder, (2) current or previous candidacy for partisan office, or (3) identification of partisan affiliation by multiple media outlets.