Visitors to a Minnesota State Fair booth staffed by supporters of a state constitutional amendment banning gay marriage chat with a volunteer in late August in Falcon Heights, Minn. Gay-marriage backers, who are seeking to defeat the initiative, are likely to far outspend proponents, though the most recent polls show the referendum narrowly ahead. (Associated Press)

Visitors to a Minnesota State Fair booth staffed by supporters of a state constitutional amendment banning gay marriage chat with a volunteer in late August in Falcon Heights, Minn. Gay-marriage backers, who are seeking to defeat the initiative, are likely to far outspend proponents, though the most recent polls show the referendum narrowly ahead. (Associated Press)