Things Fall Apart

Summary

Faced with a Democratic party in disarray in the face of the strongest Republican challenger they have ever had, Bartlet asks Leo to take charge of the potentially chaotic Democratic National Convention, while Santos considers a party-unifying vice-presidential offer from front-runner Russell. Meanwhile, the International Space Station is leaking oxygen and a rescue of the three astronauts will be difficult, and Bartlet catches Charlie leaving Zoey's bedroom after a nighttime visit.

Guest stars

• Alan Alda as Arnold Vinick
• Jimmy Smits as Matthew Santos
• Kristin Chenoweth as Annabeth Schott
• Teri Polo as Helen Santos
• Renée Estevez as Nancy
• Steve Ryan as Miles Hutchinson
• Elisabeth Moss as Zoey Bartlet
• Gary Cole as Bob Russell
• Brett Cullen as Ray Sullivan
• Sam Robards as Greg Brock