Moderates and progressives are threatening to vote down different parts of their own party’s agenda, all while a government shutdown looms. Vox’s Li Zhou explains why.

Today’s show was produced by Will Reid with help from Miles Bryan, edited by Matt Collette, engineered by Efim Shapiro, fact-checked by Laura Bullard, and hosted by Haleema Shah.

Transcript at vox.com/todayexplained.

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