2022 St. Charles County Executive election|
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The 2022 St. Charles County Executive election took place on November 8, 2022. Incumbent Republican County Executive Steve Ehlmann ran for re-election to a fifth term. State Senator Bob Onder announced that he would challenge Ehlmann in the Republican primary, but ultimately dropped out of the race. Ehlmann ultimately faced perennial candidate Arnie Dienoff in the Republican primary, and defeated him in a landslide, winning 82 percent of the vote. In the general election, Ehlmann faced no opposition and won his fifth term unopposed.