Some races remain to be called statewide, but Belmont posted its unofficial results around 10 p.m. Tuesday. Belmont mirrored Massachusetts election results, as voters returned Gov. Maura Healey, Sen. Ed Markey, and state Sen. William Brownsberger to office. The Associated Press called the race for governor and U.S. Senate moments after polls closed. In her hometown, Belmont resident Elizabeth Dionne fell short in her bid for state treasurer, losing to incumbent Deborah Goldberg. Town Clerk Ellen O’Brien Cushman and her…