Democratic Candidate Dan Buttermann Renewables, Futuristic Farms Excite Challenger Buttermann By JIM KEVLIN • Special to www.AllOTSEGO.com ONEONTA – It started when Denny Colgan was running for school board in Prescott, Ariz. He and Dan Buttermann’s dad, Kent, played in the Prescott Kiwanis Jug Band together, and the father agreed to be his friend’s campaign manager. Young Dan “saw how hard they were working,” and was captivated by the energetic strategy sessions at the Buttermann home. Even then, he knew, “I…