“He knows he’s gone,” Professor Siracusa told Sky News Australia.
“All the polls say he’s not going to win – he knows he’s not going to win.
“He knows he’s gone because a lot of Democrats who are running in November don’t want him near them.”
Professor Siracusa said Joe Biden is a “dead man walking”.
“He’s not going to win –we’re going to have a landslide of Republicans in November”.