Joe Biden warns that Donald Trump may try to delay November election

• 'I think he is going to try to kick back the election somehow'
• Democrat also expect Russia and others to interfere

Former vice-president Joe Biden said he is concerned Donald Trump will try to delay the November presidential election, during remarks at an online fundraiser.

"Mark my words, I think he is going to try to kick back the election somehow, come up with some rationale why it can't be held," Biden, the presumptive Democratic nominee, said on Thursday night.