Only active dues paying MCCC members may vote. If you are an active member (as opposed to agency fee payer), then you should have received a letter in the mail with your unique Voter ID and Password.
If you are not sure whether you pay union member dues or the agency fee, then look here: http://mccc-union.org/Dues/ and compare rates with what you pay.
If you are a dues paying member and you do not receive a letter with your Voter ID and Password by the end of the day Monday, March 13, then contact the MCCC Office at 508-890-6688.