Challenger Elaine Fiore won a three-year term on the Board of Selectmen in last week’s town election, defeating incumbent Joe Casna by an unexpectedly large margin, 751 votes to 429. A third candidate, Sam Cappola, received 69 votes. Several other potential candidates for the post dropped out last month after Casna, the board’s chairman, decided to run for reelection. In a crowded contest to fill a one-year unexpired term on the board created by the resignation of former selectman Ron Gleason, Dennis Randall won a narrow victory, receiving 347 votes, 13 more than the 334 for runner-up Tammy Murray-Cousins. Peter Boncek received 298 votes and Lindsay Wilson garnered 270. Susan Boyer was elected to fill an open one-year seat on the Planning Board, defeating Bill Watson by a vote of 749 to 377. And in a three-way contest for two seats on the Board of Health, challenger Toni Cushman won election with 652 votes and incumbent Bill Kavol kept his seat with 612 votes, while incumbent Dan Sapir trailed with 594 votes and lost his seat.