Middleman Percy If the people are in a mood to take “anybody but Johnson” next year, anybody will do as his opponent. But the Republicans would be playing a very long shot were they to take it for granted that frustrations over Vietnam, grumblings on the farm, or plain distrust of Lyndon Johnson will put them back in the White House, regardless. Somebody would have a better chance than anybody. But none of the somebodys so far has caught the popular fancy. Romney the Rambler is slipping. Rockefeller the Divorced has other problems, Nixon is a has-been.