The Minnesota Independent took a look at lobbying reports, campaign finance filings and foundation tax records and found a large amount of money coming from a handful of people. Lobbying reports don’t include the amount of money given to a particular lobbyist, only whether the donation was more than $500 per year. And campaign finance reports are limited to funds that went toward advertising, print or other electioneering communication and activity.
Three groups have been behind the push for a constitutional ban on same-sex marriage. The Minnesota Family Council (which also runs Minnesota for Marriage), the Minnesota Catholic Conference (a part of Minnesota for Marriage) and Minnesota Citizens in Defense of Marriage (which reformed under the banner of Minnesota Majority several years ago).