DEMOCRATS BACK ZEPHYR Koch Brothers’ ‘Dark Money’ Headed To 19th, She Reports By JIM KEVLIN • for www.AllOTSEGO.com COOPERSTOWN – Despite a forceful presentation by her primary opponent that appeared to take her by surprise, Zephyr Teachout won the support of the Otsego County Democratic Committee a few minutes ago in her bid to replace retiring Republican Congressman Chris Gibson in the 19th District this fall. Teachout, who reminded her audience she won 71 percent of Otsego County voters in her 2014 primary bid against Governor Cuomo, was endorsed by almost all the two dozen county committee members who gathered this…