Freedom To Marry, a national organization campaigning for marriage equality coordinated the campaign.
As of today, the mayors of Charlottesville and Alexandria have signed the pledge. According to James Parrish, the executive director of Equality Virginia, Freedom To Marry contacted the state organization requesting help with campaign. Parrish says EV has a few more mayors they are working with to commit to the pledge.
Members of the group include Michael Bloomberg of New York City, Thomas Menino of Boston, Annise Parker of Houston, Rahm Emanuel of Chicago and Antonio Villaraigosa of Los Angeles. In 2009, the U.S. Conference of Mayors unanimously approved a pro-marriage equality resolution at their annual meeting.