It’s March 4th. This day in 2004, Pat Toomey is challenging Republican Senator Arlen Specter in the Pennsylvania senate race — trying to outflank him from the right in the state’s primary.

Jody, Niki, and Kellie look back at the moment where “to primary someone” became a political phenomenon, and talk to Nick Troiano of Unite America about why the primary system has been weaponized.

Nick’s new book is “The Primary Solution” — it’s out now!

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Our team: Jacob Feldman, Researcher/Producer; Brittani Brown, Producer; Khawla Nakua, Transcripts; music by Teen Daze and Blue Dot Sessions; Audrey Mardavich is our Executive Producer at Radiotopia