Opponents of a proposed constitutional amendment which would define marriage as a heterosexual union in Minnesota have raised $1.2 million to defeat the measure in November, the Star-Tribune reported.

Campaign finance reports show Minnesotans United for All Families raised the funds mostly in the closing quarter of 2011 from more than 5,100 people.

“Thousands of Minnesotans are beginning conversations with friends, family and neighbors about why they need to vote no on this anti-family amendment,” Richard Carlbom, campaign manager for Minnesotans United, told the paper. “It's not about the money, it's about the conversations.”

(Related: Minnesota voters divided on gay marriage ban.)

The majority of the money (75%) came from Minnesotan donors, who each contributed, on average, $216.

More than a dozen contributions exceeded $10,000 or more, including a donation from Bruce Dayton, the father of Minnesota Governor Mark Dayton, an opponent of the amendment.

Rick Smith, who plans to help the group raise funds by hosting a house party, told the paper that he is working against passage of the amendment because Minnesota won't recognize his daughter's Massachusetts marriage to her wife.

“There is nothing that can strengthen a family more than letting two people who love each other get married,” he said. “I know how hard it is to find a soul mate, and I can't imagine how hard it is that they can't do what is in their hearts.”

Minnesota for Marriage, the group behind the amendment, is expected to release its reports on Tuesday.