Joe Biden is under pressure to end his candidacy in the upcoming US presidential election after a calamitous debate performance against Donald Trump last month.
A news conference on Thursday failed to reassure his party and donors after he occasionally stumbled over his words.
Democrats are worried that growing concerns that Biden is too old for the job could cause them to lose the presidency along with many seats in the House and Senate.
However, Biden has a long history of verbal slips and other blunders that possibly make it hard to blame his age alone. “I am a gaffe machine,” he admitted in December 2018 when asked about potential liabilities of his election campaign.
Do you remember some of his other verbal slips and gaffes from recent years? Try our quiz below.