A national group opposed to same-sex marriage says it will spend $500,000 to defeat Republican lawmakers in Minnesota who vote to legalize same-sex marriage.
The National Organization for Marriage issued the warning Monday. The group previously contributed more than $2 million to last fall's failed campaign to ban same-sex marriage in Minnesota constitution.
Bills to legalize same-sex marriage are likely to be introduced at Minnesota's Capitol this week.
One Republican senator, Branden Petersen, already says he'll support it. But the National Organization of Marriage says that's a "career-ending" vote for Republicans. The group has helped fund conservative primary challengers to Republicans in other states who voted in favor same-sex marriage.
NOM says it will also financially support Democrats who vote against legalizing same-sex marriage.