USSC Associate Professor Dr David Smith talked to ABC Radio about the fallout from the assassination attempt on Donald Trump and how this may affect the election campaign.

"There's going to be an outpouring of sympathy towards Trump," said Dr Smith.

"I do feel that this is going to make things even harder for Joe Biden. Because now we've got the contrast of: Trump has survived an assassination attempt, Biden could barely make it all the way through a debate."