Anxious benefactors plot next moves after Biden debate calamity

Campaign announces record fundraising in wake of Trump debate but wealthy Democrats undecided on path forward

A silver lining of Joe Biden's pernicious debate performance was, according to a succession of upbeat emails from the president's re-election campaign, a record fundraising haul.

By Sunday night, only three days after he stumbled through 90 painful minutes in the company of presumptive Republican nominee Donald Trump, more than $33m had dropped into Biden campaign coffers. Debate day itself was our best grassroots fundraising day ever", officials announced.