Four of the five major Democratic candidates for mayor of Philadelphia are expected to participate in a forum at 8 tonight at Congregation Rodeph Shalom, 615 N. Broad St.

Organizers of the free, public event said they had commitments from State Rep. Dwight Evans, U.S. Rep. Chaka Fattah, businessman Tom Knox, and former City Councilman Michael A. Nutter. Each candidate will have up to 15 minutes for his opening presentation. Questions and answers will follow. - Larry Eichel