Ethics Ruling Puts Torricelli In a Tight Spot
New Jersey Senate race that began with Sen Robert G Torricelli as prohibitive favorite has suddenly become free-for-all; one day after he is 'severely admonished' by Senate Ethics Committee for accepting improper gifts from campaign donor David Chang, Torricelli calls some New Jersey Democrats in effort to shore up support, but does not address issue publicly; Republicans seem little inclined to let matter drop; Douglas R Forrester, Republican nominee for Senate, calls on Torricelli to resign, saying his actions and misleading public statements make him unfit to hold office; National Republican Senatorial Committee reiterates its intention to make maximum allowable donation to race and national party gives Forrester's campaign its lists of contributors to help jump-start his fund-raising effort; Sen John McCain tells reporters that ethics committee should release all documents it gathered in its nvestigation, move that would only prolong debate; Torricelli is receiving noticeably lukewarm endorsements from his own party; strongest support comes from Washington; Senate majority leader Tom Daschle suggests committee found Torricelli's accuser Chang untruthful; Sen Jon Corzine characterizes committee's action as 'relatively mild rebuke'; New Jersey Gov James E McGreevey cites some of Torricelli's accomplishments in response to questions about ethics committte's ruling (M)