A national group is sinking $200,000 into TV ads opposing gay marriage in Minnesota.
The Washington-based National Organization for Marriage says Minnesota is the latest battleground state in the fight over same-sex marriage.
The statewide ad urges a vote on the issue through a constitutional amendment defining marriage as the union of one man and one woman.
The group announced the ad campaign on Tuesday, a week after three gay couples filed a lawsuit seeking to overturn Minnesota's ban on gay marriage.
The ad shows images of four candidates for governor who support gay rights: Democrats Mark Dayton, Matt Entenza and Margaret Anderson Kelliher and Independence Party candidate Tom Horner.
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