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Back in 2020, Joe Biden stood out in a crowded Democratic primary field filled with younger, more historic candidates. Voters worried that Mr. Biden was too moderate, too uninspiring and too old.
One of his challengers, former Housing and Urban Development Secretary Julián Castro, got a lot of attention for his willingness to echo those concerns.
But after going hard at Mr. Biden in a debate, his campaign fizzled and Mr. Castro, once a rising star in the Democratic Party, left Washington altogether. To some, it seemed like evidence of the consequences of stepping out of line with the party.
Heading into the 2024 election, as voters grapple with the same questions about the incumbent president, Astead sits down with Mr. Castro to explore the party’s code of silence surrounding Mr. Biden’s primary alternatives and his advanced age.

About ‘The Run-Up’
First launched in August 2016, three months before the election of Donald Trump, “The Run-Up” is The New York Times’s flagship political podcast. The host, Astead W. Herndon, grapples with the big ideas already animating the 2024 presidential election. Because it’s always about more than who wins and loses. And the next election has already started.
Last season, “The Run-Up” focused on grass-roots voters and shifting attitudes among the bases of both political parties. This season, we go inside the party establishment.
New episodes on Thursdays.
Credits
“The Run-Up” is hosted by Astead W. Herndon and produced by Elisa Gutierrez, Caitlin O’Keefe and Anna Foley. The show is edited by Frannie Carr Toth and Lisa Tobin. Engineering by Corey Schreppel and original music by Dan Powell, Marion Lozano and Elisheba Ittoop. Fact-checking by Caitlin Love.
Special thanks to Paula Szuchman, Sam Dolnick, Larissa Anderson, David Halbfinger, Renan Borelli, Mahima Chablani, Desiree Ibekwe, Jeffrey Miranda, Sophia Lanman and Maddy Masiello.