By Emily Wagster Pettus Associated Press JACKSON – One of the plaintiffs who filed a federal lawsuit challenging Mississippi’s ban on same-sex marriage is running for state auditor. Jocelyn Pritchett of Jackson sent an advisory Thursday saying she will announce her candidacy Friday at the state Capitol. Pritchett goes by her nickname, Joce. She is a civil engineer and owns Pritchett Engineering and Planning LLC in Flowood. Pritchett will face retired firefighter Charles Graham of Jackson in the Democratic primary. Auditor Stacy Pickering of Laurel is seeking a third term.