Stammel, Quackenbush Disagree On Last-Minute Mailing’s Origin By JIM KEVLIN • for AllOTSEGO.com ONEONTA – Andrew Stammel, county board candidate for District 4, has lashed out against a last-minute mailing, received Saturday, reporting that, as a public defender in 2010, he had represented an accused Sidney sex offender. “The campaign against me in District 4 has stooped to another low,” said Stammel. The mailing was a copy of a news clipping. Handwritten across the top was: “As your neighbor, I…