Young challengers are jumping into Democratic primaries against elder party stalwarts, putting age squarely on the ballot in the wake of former President Biden’s reelection bid coming to a disastrous end.

The generational primary match-ups are quickly stacking up.

In Maine, first-time candidate Graham Platner, 40, faces 77-year-old Gov. Janet Mills. Down south in Tennessee, state Rep. Justin Pearson, 30, will run for the seat of longtime 76-year-old Rep. Steve Cohen. Rep. Seth Moulton (Mass.), 46, is seeking to oust Sen. Ed Markey (Mass.), 79. In the nation’s capital, 88-year-old Del. Eleanor Holmes Norton will face at least two younger foes if she runs for reelection. And California state Sen. Scott Wiener, 55, and a former aide to Rep. Alexandria Ocasio-Cortez (N.Y.) are geared up to challenge 85-year-old former House Speaker Nancy Pelosi (Calif.).

As battles shape up between the party’s young guns and old guard, experts and candidates are debating how much age will ultimately affect voters’ decisions.

“There’s no question that Biden’s performance in the election cycle of 2024 certainly had an impact in terms of how we view politicians and their ability to govern as they continue to age,” said Mark Updegrove, a presidential historian for ABC News and CEO of the Lyndon Baines Johnson Presidential Library.

Olivia Julianna, a youth Democratic strategist and content creator, also traced the trend back to Biden. “I think it’s a........

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