1. The Ticket

Leo is surprisingly criticized as Santos' running mate.

2. The Mommy Problem

A grand jury investigates a White House military leak.

3. Message of the Week

Vinick undermines Santos by targeting immigration issues.

4. Mr. Frost

Staffers testify in the military shuttle leak investigation.

5. Here Today

Toby retains counsel. Josh makes some tough decisions

6. The Al Smith Dinner

A third party exposes Santos' and Vinick's abortion stances.

7. The Debate (West Coast)

The candidates debate.

8. Undecideds

Santos visits a family whose child was shot by a Latino cop.

9. The Wedding

Before Ellie's wedding, a military problem diverts Bartlet.

10. Running Mates

As Leo struggles with debate practice, Josh worries.

11. Internal Displacement

Embarrassing information about Bartlet surfaces.

12. Duck and Cover

Bartlet deals with a possible nuclear reactor meltdown.

13. The Cold

After the nuclear scare, Vinick falters, and Santos gains.

14. Two Weeks Out

Vinick gets an opportunity to damage the Santos campaign.

15. Welcome to Wherever You Are

Toby is pressured to reveal his source on the shuttle leak.

16. Election Day Part 1

The night before the election is important for two staffers.

17. Election Day Part 2

The polls close, results are tallied and emotions run high.

18. Requiem

Bartlet's staff and friends come together for Leo's funeral.

19. Transition

Controversy occurs over the President-Elect and China.

20. The Last Hurrah

Santos chooses a Vice President. Vinick deals with changes.

21. Institutional Memory

C.J. and Will confront their post-election choices.

22. Tomorrow

Bartlet and team look back on their time in the White House.