ST. PAUL  - With New York gearing up for same-sex weddings, the battle lines are forming for the next skirmishes over gay marriage - and the most dramatic could come in Minnesota.

Gay-marriage supporters there will be trying to end a 31-state losing streak at the polls and defeat a proposed amendment on the 2012 ballot that would limit marriage to one-man, one-woman unions.

The stakes are high for both camps.

If the amendment passes, foes of gay marriage will be able to claim that the New York Legislature's vote Friday to legalize same-sex marriage did not turn the tide nationally.

If the amendment is defeated, that streak will be broken, and gay-marriage supporters will be able to make a strong case that public opinion has turned in their favor.