Democrat Steve Bieda of Warren had been running to replace U.S. representative Sandy Levin, who's retiring.
Now Bieda is running for Macomb County clerk.
In a statement yesterday, he said his decision was influenced by the "corruption and scandal" under former clerk Karen Spranger.
Spranger was removed from office by a judge last month.
Bieda has been a state senator since 2010 and also served as a state representative.
The remaining candidates for the Democratic nomination in the 9th Congressional district are Sandy Levin's son Andy Levin, former state Representative Ellen Lipton, and Martin Brook, a lawyer from Bloomfield Township.
