In January 1991, the incumbent mayor Gayle McCandliss died of cancer. A special election for the mayor position was held on June 4, 1991. It ended with the election of Tim Nader, a member of the city council.[2]
The 1994 Chula Vista mayoral election was held on June 7, 1994. The incumbent mayor Tim Nader did not seek reelection. Shirley Horton, a member of the city council, won the mayoral office with more than 50% of the votes in the primary election.
The 1998 Chula Vista mayoral election was held on June 2, 1998. Incumbent mayor Shirley Horton secured her second term as mayor with over 70% of the votes in the primary election.
The 2002 Chula Vista mayoral election was held on November 5, 2002. Incumbent mayor Shirley Horton could not run for reelection due to term limit. Steve Padilla, a member of the city council, won the election.
The 2006 Chula Vista mayoral election was held on November 7, 2006. A primary election was held on June 6. Incumbent mayor Steve Padilla ran for reelection, but was defeated by Cheryl Cox, an administrator of Chula Vista Elementary School District.
The 2010 Chula Vista mayoral election was held on June 8, 2010. This primary election resulted in the reelection of Cheryl Cox, as she gained over 50% of the votes.
The 2014 Chula Vista mayoral election was held on November 4, 2014. It saw the election of Mary Salas, a member of the city council.
The incumbent mayor Cheryl Cox did not seek reelection due to term limit. A primary election took place on June 3 to determine the two candidates for the general election.
The 2018 Chula Vista mayoral election was held on November 6, 2018. A primary election was held on June 5 to select the candidates for the general election on November. Mary Salas, the incumbent mayor, won the reelection to her second term.[13]