Businesses could see $160 million in new wedding and tourism spending over the next three years, according to a study from researchers at the University of California at Los Angeles.

"Iowa pretty much has the Midwest all to itself," said Lee Badgett, a University of Massachusetts economist who co-authored the 2008 report. "It's in the middle of a lot of states that have a lot of same-sex couples. It's in a good position."

The study predicts that 2,917 same-sex Iowa couples will wed in the three years after the marriages are allowed to proceed. In addition, nearly 55,000 out-of-state couples could come to Iowa to get married, the study found.