The Maine Bureau of Motor Vehicles plans to allow people to pick "X" for "gender non-binary" along with male and female.
The change stems from a complaint to the Maine Human Rights Commission filed last year by a South Portland resident who identifies as neither male nor female.
Four male write-in candidates who emerged after state Senator Stanley Rosenberg resigned last month are being called sexist for running against a woman who is the only candidate appearing on the Democratic primary ballot.
Rosenberg resigned May 4, after the deadline for getting on the ballot had passed. But five write-in candidates have emerged, and four of them are men.
