Isaac Kelley was elected to the Timberville, Virginia, town council on November 8, 2022, even though he didn’t decide to run until noon on election day. The town was electing three members to the council. There were only two candidates on the ballot, so it was inevitable that one write-in candidate was going to win. But another individual, who already held local public office, was already running as a write-in.

Kelley received 100 write-ins; his write-in opponent received 82. See this story. Timberville has a population of 2,522 and is in Rockingham County.

Virginia has a declaration of candidacy requirement for write-in presidential candidates, but not for any other office. Therefore all write-ins (for office other than president) are valid. Thanks to Bryan Gilkerson for the link.