The final season of this gripping drama focuses on the close of President Bartlet's tenure and the race that will elect his Oval Office successor.

1. The Ticket 43m As Bartlet's time in the White House comes to an end, two formidable men vie for the Presidency: Arnold Vinick and Matthew Santos.

2. The Mommy Problem 43m As a grand jury convenes to investigate the White House military shuttle leak, the campaign's focus changes to national security.

3. Message of the Week 43m Vinick undermines the Santos campaign by targeting immigration issues, a topic Santos had previously successfully avoided.

4. Mr. Frost 42m Since several members of the staff have been subpoenaed to testify in the military shuttle leak investigation, C.J. is left to run the office.

5. Here Today 43m After answering questions from White House Counsel Oliver Babish, Toby concludes that he needs to retain counsel.

6. The Al Smith Dinner 43m A third-party attack on Santos brings unwanted attention to both his and Vinick's stance on abortion. Meanwhile, Will gets a promotion.

7. The Debate 51m Congressman Matt Santos and Senator Arnold Vinick participate in a tension-filled debate.

8. Undecideds 43m Santos visits an African American family whose child was shot by a Latino police officer. C.J. manages a crisis between China and Kazakhstan.

9. The Wedding 43m On the eve of Ellie's White House wedding, a military situation in Central Asia takes Bartlet away from the rehearsal festivities.

10. Running Mates 44m Leo struggles through debate practice and makes Josh and Lou extremely nervous. Meanwhile, Santos gets a brief respite from the campaign trail.

11. Internal Displacement 43m C.J. is in the process of negotiating a deal between Russia and China when some potentially embarrassing information about Bartlet surfaces.

12. Duck and Cover 43m Bartlet must face the possibility of a nuclear reactor meltdown in California. In the midst of this emergency, the presidential campaign goes on.

13. The Cold 43m The effects of a nuclear scare in California continue to shake things up on both sides of the campaign trail.

14. Two Weeks Out 43m As the end of the campaign trail nears, the candidates feel the burden more than ever.

15. Welcome to Wherever You Are 43m The attorney general pressures Toby to reveal his source on the shuttle leak. Meanwhile, Santos continues his dizzying tour of the country.

16. Election Day 43m The night before Election Day becomes even more meaningful for two staffers. Josh stresses over returns, while C.J. is faced with future job offers.

17. Election Day, Part II 43m As the polls close and the results are tallied, emotions run high. Santos and Josh face the loss of their vice presidential candidate.

18. Requiem 43m Bartlet and his current staff -- as well as some friends from the past -- come together for Leo's funeral.

19. Transition 44m A controversy occurs when the president-elect places a telephone call to the president of China and espouses a different viewpoint than Bartlet's.

20. The Last Hurrah 43m While Santos is wrapped up in choosing his new vice president, Helen is overwhelmed by the issues facing the new first family.

21. Institutional Memory 43m As the Bartlet administration prepares to transition into the Santos administration, C.J. must confront the choices affecting her future.