From Richard Winger at Ballot Access News:
Mayor Shayne Gallo of Kingston, New York, is running for re-election in a partisan election on November 3, 2015. He is a Democrat, but he has a powerful opponent in the Democratic primary in September. In case he loses the Democratic primary, he hoped to be nominated by either or both the Independence Party and the Conservative Party. He did not file to run in the Working Families Party primary.
Due to a judicial decision saying his acceptance form was a day too late for the Independence and Conservative process, he can’t expect to get their nomination. Although he could run as a write-in, it is unlikely he could win because his Republican opponent is on the ballot in the primaries of those two parties.
But, as this story explains, Mayor Gallo might get the Green Party nomination on write-in votes in the Green primary. That would not be very difficult because no one has qualified to be on the Green Party primary ballot for Mayor.