Adjuncts at Ithaca College voted to form a union affiliated with Service Employees International Union, 172 to 53, they announced Thursday. Sarah Grundberg, an adjunct instructor of sociology, said in a news release that the union will “not only make the college stronger as a whole but will also continue to set an example nationally that part-time faculty deserve better working conditions and that coming together can and does facilitate positive change.” Adjuncts elsewhere in New York State, at the College of Saint Rose and Schenectady Community College, have recently formed SEIU-affiliated collective bargaining units as part of the union’s national Adjunct Action campaign. Thomas Rochon, Ithaca’s president, said in a statement that the college plans to bargain in good faith with the new unit, to “reach a consensus that balances the requests of the faculty with the ongoing needs of the college and its students.”