The West Wing

Josh is caught off guard when political commentators are critical of Leo as a running mate for Santos. White House Counsel Oliver Babish discusses a leak investigation with C.J., and Donna approaches Josh for a job.

As a grand jury convenes to investigate the White House military shuttle leak, the campaign's focus changes to national security. Vinick deftly handles the issue while Santos is bound by his party loyalty to align himself with the Bartlet administration.

Vinick undermines the Santos campaign by targeting immigration issues--a topic Santos had previously successfully avoided. Meanwhile, an eager National Security Agency agent briefs Vinick about a serious situation in Kazakhstan.

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 practically by herself. Major trouble breaks out in the Middle East jeopardizing Bartlet's peace plan. Outstanding Episode

After answering questions from White House Counsel Oliver Babish (recurring guest star OLIVER PLATT), Toby concludes that he needs to retain counsel. Meanwhile, Josh realizes that everyone involved in the Santos campaign is young and inexperienced, forcing him to make some tough decisions. Outstanding Episode

A third-party attack on Santos brings unwanted attention to both his and Vinick's stance on abortion. Meanwhile, Will gets a promotion.

In a first for "The West Wing," the Emmy Award-winning series broadcasts a live episode featuring a tension-packed debate between the two Presidential candidates, Congressman Matt Santos and Senator Arnold Vinick. In the U.S., the episode will be performed and broadcast live twice, once for the East Coast and again for the West Coast.

Santos visits a Los Angeles African-American family whose child was shot by a Latino police officer. C.J. manages a crisis between China and Kazakhstan. Outstanding Episode

On the eve of Ellie's White House wedding, a military situation in Central Asia takes Bartlet away from the rehearsal. As Santos trails Vinick, he, Josh and Leo strategize.

Leo struggles through debate practice and makes Josh and Lou (recurring guest star JANEANE GAROFALO) extremely nervous. Meanwhile, Santos gets a brief respite from the campaign trail to see his family.

C.J. is in the process of negotiating a deal so Russia and China don't go to war over Kazakstan when some potentially embarrassing information about Bartlet surfaces. Meanwhile, Josh pressures the White House to let Santos announce a scientific research lab in Texas, much to the administration's chagrin.

Bartlet must face the possibility of a nuclear reactor meltdown in California. In the midst of this emergency, the presidential campaign goes on, and the candidates find themselves struggling to find a good strategy to deal with the situation. Meanwhile, Kate keeps an eye on the impending battle between Russia and China over Kazakstan. Outstanding Episode

After the nuclear scare, Vinick falters, and Santos gains. Josh and Donna share a moment. Military forces from China and Russia face off over a tense situation in Kazakhstan.

As the end of the campaign trail nears, the candidates feel the burden more than ever. Meanwhile, an interesting and unexpected twist gives Vinick an opportunity to damage the Santos campaign.

The Attorney General pressures Toby to reveal his source on the shuttle leak. Meanwhile, Santos continues his dizzying tour of the country. Santos' campaign bus is abuzz when rock star JON BON JOVI (himself) comes aboard to lend his support and perform part of his song "Welcome to Wherever You Are."

In the series' 150th episode, 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. And Annabeth makes a startling discovery.

As the polls close, and results are tallied, emotions run high. Santos and Josh face the loss of their Vice Presidential candidate. Meanwhile, Vinick disagrees with his campaign team. Outstanding Episode

Bartlet and his current staff -- as well as some friends from the past -- come together for Leo's funeral. Santos must choose a new Vice President. Numerous guest stars appear.

A controversy occurs when the President-Elect places a telephone call to the president of China and espouses a different viewpoint from that of Bartlet. Meanwhile, Josh chooses his deputy chief of staff. Recurring guest stars include ROB LOWE as Sam Seaborn, LILY TOMLIN as Deborah Fiderer, TERI POLO as Helen Santos, JANEANE GAROFALO as Louise Thornton and ANNA DEAVERE SMITH as Nancy McNally.

While Santos is wrapped up in choosing his new Vice President, Helen (recurring guest star TERI POLO) is overwhelmed by the issues facing the new First Family. Meanwhile, Vinick also deals with a new life now that the election is over.

As the Bartlet administration prepares to transition into the Santos administration, C.J. must confront the choices affecting her future. Meanwhile, Will also finds himself in a position of uncertainty about what is to come.

In the series finale, the Bartlet administration prepares to leave the West Wing. While Santos and his winning camp nervously gear up for the inauguration, outgoing President Bartlet, C.J. and the others fondly look back on their time in the White House. Former series star ROB LOWE guest stars as Sam Seaborn.