Morning Line: How 1986 might affect 1988

Last week's results added a few more wrinkles to what could be the first wide- open contest in a generation for the presidential nomination in both parties. Among them:

Mario Cuomo. He won re-election as New York State's Governor with a record- breaking 65% landslide, winning among all types of voters. Yet it was hardly an edifying performance. He seemed churlish about avoiding debates with a feeble G.O.P. challenger and lifted nary a finger for the rest of his ticket. Cuomo lost some of his luster among insiders and could face problems nationally if he continues to raise doubts about his...