Rose Krasnow, former mayor of Rockville and 2018 candidate for County Executive, has endorsed David Blair for Montgomery County Executive. Blair and Krasnow were two of the six Democratic candidates for County Executive in the 2018 primary.
Marc Elrich won the Democratic primary with 37,532 votes. David Blair finished second, 77 votes short of Marc Elrich, with 37,455 votes, and Krasnow finished third with 19,644 votes. They were followed by Roger Berliner, George Leventhal, and Bill Frick.