A petition has been launched urging Minnesota Attorney General Lori Swanson to file a brief supporting marriage equality lawsuits in Oklahoma and Utah.

On Wednesday, 15 states filed briefs in support of the marriage equality lawsuits pending in Oklahoma and Utah including Massachusetts, California, Connecticut, Delaware, District of Columbia, Illinois, Iowa, Maine Maryland, New Hampshire, New Mexico, New York, Rhode Island, Vermont, and Washington.

Oregon also signed on.

A petition at Change.org urges Minnesota’s Attorney General Lori Swanson to do the same.

Only three states with marriage equality — including Minnesota — have not signed on. New Jersey’s Republican attorney general has not signed on, and Hawaii’s attorney general is waiting to see what happens with the case before signing on.

One commenter on the petition, Jessica Banks of St. Paul said, “Minnesota worked incredibly hard to stop a 30-state trend in passing harmful anti-marriage amendments, and we need to join our voices with other marriage equality states to support the expansion of these rights in other states!”