he most recent survey, a McClatchy-Marist poll, shows Clinton leading Trump by a margin of 48 percent to 33 percent. The same survey last month showed Clinton with a much smaller edge — 42 percent to 39 percent — over her Republican challenger. 

The director of the Marist College polling group, Lee Miringoff, said Friday that the rapid switch in voters' preferences shows "a Trump candidacy in jeopardy."

The poll was conducted Monday through Wednesday of this week and was released late Thursday. Miringoff said "a long list of unforced errors by Trump" — including the controversy generated by his criticism of a Muslim couple who spoke at the final session of the Democratic convention on July 28 — and a "post-convention bounce" in support for Clinton accounted for the poll results.

Not all the numbers, however, are positive for former Secretary of State Clinton. The Marist poll indicated 40 percent of registered voters said the main factor that prompted them to support Clinton was their opposition to Trump.