Candidates Night at First Parish ChurchThe Ward 15 and 13 Democratic ward committees will sponsor a candidates night on Thursday, Aug. 18 for the candidates for Boston City Council in Districts 3 and 4. The event will begin with District 3 candidates at 6:30 p.m. The forum will be held at First Parish Church, 10 Parish Street in Meetinghouse Hill, Dorchester. The District 4 candidates — incumbent Charles Yancey and challenger J.R. Rucker— will appear at 8 p.m.