As Democrats struggle to coalesce around a winning message for next year’s midterms, the party remains haunted by the ghost of Joe Biden’s failed reelection bid.

Rep. Ro Khanna of California has said he “made a mistake” in backing Biden’s candidacy. Sen. Chris Murphy of Connecticut said there was “no doubt” Biden suffered cognitive decline while in office. And on Sunday, former transportation secretary Pete Buttigieg was asked about Biden — and said firmly he “should not have run.”