Jennifer Rubin isn't buying it:
First, public opinion, unlike punditry, is not instantaneously changed. People in a national poll (registered, not even likely, voters), most of whom are not in early primary states, get drips and drabs of the scandal. Until they get all the facts, talk to friends and family, watch the late-night comedians and soak up the coverage, they really can’t be expected to pronounce on the subject.
The WaPo looks at GOP voters' second choices.