Marylanders launched a new campaign July 12 to pass a same-sex-marriage law next year.
A bill to legalize same-sex marriage passed the Senate this year but crashed and burned in the House of Delegates at the last minute.
The new campaign, kicked off at Baltimore City Hall, will be run by a coalition called Marylanders for Marriage Equality.
House of Delegates member Heather Mizeur said the group is composed of advocacy organizations, congregations, businesses, unions, Democrats, Republicans and independents.
Same-sex marriage is legal in Connecticut, Iowa, Massachusetts, New Hampshire, New York, Vermont and Washington, D.C.