Photo by M.V. Jantzen A wide range of District political candidates gathered at One Judiciary Square last night to make their case to members of D.C. for Democracy why the organization should support their candidacies in the September Democratic primary. Everyone from the mayor to would-be shadow representatives showed up to make their case. Endorsements should be handed down in the coming weeks. While it’d be impossible to do a full play-by-play account, I’ve…