2018 St. Charles County Executive election

2018 St. Charles County Executive election
November 6, 2018
 
Nominee Steve Ehlmann Lorna Frahm
Party Republican Democratic
Popular vote 104,258 63,550
Percentage 62.06% 37.83%

County Executive before election

Steve Ehlmann
Republican

Elected County Executive

Steve Ehlmann
Republican

The 2018 St. Charles County Executive election took place on November 6, 2018. Incumbent Republican County Executive Steve Ehlmann ran for re-election to a fourth term. He won the Republican primary unopposed and faced St. Peters Prosecuting Attorney Lorna Frahm, the Democratic nominee, in the general election. Ehlmann defeated Frahm by a wide margin, winning re-election with 62 percent of the vote.