Minnesota's proposal to amend its constitution to define marriage as between a man and a woman has apparently lost, The Pioneer Press reported just before 5 a.m.
The Pioneer Press reported that Minnesota was the first state to successfully defeat an attempt to rewrite its constitution to defeat gay marriage.
However, in 2006 Arizona rejected an anti-gay marriage ban only to approve one two years later, the Associated Press reported in 2008.
About 30 other states have approved measures to ban same-sex marriage.
Correction: A previously published version of this article said Minnesota was the first state to reject a same-sex marriage ban. The error has been corrected.
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