5% points also compared to Clinton's huge jump is interesting, but partly explained by the breaking of the alphabet NEWs monopoly. There was no freerepublic then, and FOX News was not even a dream. Now, the nonsense gets debunked by real journalism. That's not fair for Democrats, but it's good for the country.
But Clinton got that "huge" jump because Perot dropped out of the race DURING the dem convention that year.