Cory Bowman, who shares a father with Vance, says he was inspired to enter the race after his half-brother's inauguration. A Republican last ran for Cincinnati mayor, unsuccessfully, in 2009.

Two Republicans challenged incumbent Cincinnati Mayor Aftab Pureval, a Democrat, in the nonpartisan primary.

The mayoral contest in Democrat-run Cincinnati has come down to two candidates for November following Tuesday’s primary voting. On November 4, incumbent Aftab Pureval will oppose Cory Bowman, who is the half-brother of Vice President JD Vance.