BARRING a dramatic surge by Nelson Rockefeller in the popularity polls, Richard Nixon seems to have the Republican presidential nomination tucked securely in his pocket. But some compelling questions remain:
> Can he win in November?
> If so, are his coattails strong enough to carry significant numbers of Republicans into office with him?
> Could Rocky do better?
A poll of TIME correspondents in all 50 states and the District of Columbia indicates that the answers to the three questions are 1) quite possibly, 2) no, and 3) yes. Regardless of current polls that show him...