After one term on the Oak Bluffs Select Board, Thomas Hallahan has decided to forgo another run on the town’s governing group. “Although I have enjoyed my time on the [select board], I have decided not to run for another term,” Hallahan wrote in a Jan. 7 email to Amy Del Torto, Oak Bluffs town clerk. The two took the seats of former select board members Ryan Ruley and Brian Packish, who did not seek re-election that year. Hallahan isn’t the only select board member on the Vineyard who has decided not to seek re-election. Last week, Chilmark Select Board chair Marie Larsen announced she would not seek re-election.