As calls mount for President Joe Biden to step down as the presumptive Democratic Party nominee over concerns surrounding his mental and physical capacity to lead, we host a debate between two longtime members of the Democratic Party: Wajahat Ali, who recently authored a column subtitled "Biden Is Very Old and Out of Touch, and Here's Why You Should Vote for Him," and Norman Solomon of RootsAction.org, which sponsors the Step Aside Joe campaign.

At 81 years old, Biden is already the oldest person to ever serve as president of the United States. His recent public appearances, including a poor performance at his first presidential debate against presumptive Republican Party nominee Donald Trump — who, if reelected, would be the second-oldest person to ever serve as president — have renewed questions about his health and ability. Biden has thus far resisted pressure to suspend his reelection campaign, even as the U.S. liberal coalition fractures over his candidacy. Ali says that now is the time to unite over a candidate to prevent a second Trump presidency, and that without a clear alternative, only Biden can run a winnable campaign. Meanwhile, Solomon argues that Biden's performance thus far has already critically weakened his chances of winning the election. "Uniting behind a losing candidate is a bad idea," he says.