1951 San Diego mayoral election
The 1951 San Diego mayoral election was held on April 17, 1951 to elect the mayor for San Diego. Incumbent mayor Harley E. Knox did not stand for reelection. In the primary election, Gerald C. Crary and John D. Butler received the most votes and advanced to a runoff election. Butler was then elected mayor with a majority of the votes in the runoff. Campaign. Incumbent Mayor Harley E. Knox chose not stand for reelection on the advice of his physician. On March 13, 1951, Gerald C. Crary came first in the primary election with  33.5 percent of the vote, followed by John D. Butler with 25.9 percent. Because no candidate received a majority of the vote, Crary and Butler advanced to a runoff election. On April 17, 1951, Butler received 59.6 percent of the vote in the runoff and was elected to the office of the mayor. Butler was the youngest mayor to have been elected as well as the first to be born in San Diego.