Cory Bowman was feeling inspired in January as he headed home after watching his half brother, JD Vance, be inaugurated as vice president. The 36-year-old Bowman, who shares a father with Vance, was already active in the community, starting an evangelical church in Cincinnati's West End and later opening a coffee shop. But he hadn't thought politics was his calling. Now, suddenly, he did. He decided to launch a campaign for mayor. "There was nobody that pushed me into it, nobody that told me that this is a pathway I should go," he said in an interview one recent morning....