PORTLAND — Gay-marriage opponents are preparing to distribute campaign yard signs expressing opposition to a Nov. 6 ballot question asking Mainers if they want to legalize same-sex marriage.

The Protect Marriage Maine opposition group says thousands of yard signs will be distributed to referendum opponents.

The yellow and blue signs will read: “Don’t Redefine Marriage. Vote No on Question One. Marriage (equals) One Man + One Woman.”

This is the second time in three years that Mainers will vote on the issue. Voters in 2009 repealed a same-sex marriage law passed earlier in the year by the Legislature.