There could be several races on the ballot at the annual town election on April 30. Both incumbent Chuck Bear and challenger Michael Doyle have returned papers for a three-year seat on the Board of Selectmen. Also included on the ballot will be a five-year position on the Planning Board, and three-year terms on the Board of Health, Triton Regional School Committee, Board of Assessors, and library trustees. Meanwhile, for constable, voters will cast ballots for a four-year term and a one-year unexpired term; for fish commissioner, a three-year term and a one-year unexpired term; a one-year term for tree warden; and a three-year term and two-year unexpired term on the Trustees of the First Settlers Burial Ground. Nomination papers require signatures from 35 registered town voters, and were due back to the town clerk last week.