Josh trumps a potential Democratic challenger in a masterful political move and then hires the challenger's chief of staff and ex-girlfriend Mandy Hampton. Toby tries to warn Sam away from his friendship with the call girl, but to Toby's horror, Sam seems intent on reforming her. CJ tries to spin the latest clash between President Bartlet and Vice President Hoynes. After an American plane is shot down carrying Bartlet's physician, Bartlet's response leaves Leo worried about the President's response.

After being offered "a proportional response" to the Syrian military's downing of a U.S. military plane on a medical mission (and carrying his newly named personal physician), the president demands an option that will have greater impact. Leo gradually must talk him down, while Bartlet snipes at everyone, including Abby. The president ultimately agrees to the initial option, but is not happy about it. Charlie Young is introduced as an applicant for a messenger job whom Josh decides to hire as President Bartlet's personal aide.

On the series' first "Big Block of Cheese" Day (nicknamed "Total Crackpot Day" by Josh), staffers meet with reps of various organizations causes, e.g., C.J. hosts a group that wants $900 million for a "wolves only" highway. The president has everyone to the residence for a homemade chili party, we learn about Mrs. Landingham's past, and Zoey is introduced to the group.

In the first of several episodes throughout the series' run that portrays ordinary Americans and how they interact with and ultimately affect the W.H., an Ohio middle school social studies teacher, a widower who has recently filled the brief remaining term of his late wife in the House, joins two other reps to meet with Toby and Mandy about changes to unfair rules in the U.S. Census written into the latest federal budget. The other two, career politicians, are completely resistant to the changes, but Mr. Willis is swayed by a potent argument Toby makes regarding "strict constructionism" (generally conservative and libertarian belief that the U.S. Constitution is not a living document, and must be followed as written, unless officially amended through standard 38-state ratification) and the 14th Amendment. Toby is impressed with the man and his open-mindedness. Elsewhere, Sam tutors C.J. on the finer points of the census. Late in the episode, the staff meets for a late-night poker party.

A crucial banking bill is at risk when political rivals of environmentally sensitive President Bartlet attach a land-use rider to it that would allow strip-mining some of the Montana wilderness. C.J. tries to stamp out rumors that the Chief Executive chastised the Vice President during a cabinet meeting. An overworked Leo isn't too keen on his independent daughter Mallory dating the handsome Sam. C.J. continues to fend-off the romantic charms of a perceptive reporter with a knack for sniffing out juicy stories. Former lovers Mandy and Josh clash over the administration's attempt to jettison the land-use rider that might also ruin passage of the more important banking bill.

When a homeless veteran dies on the National Mall and his body remains uncollected for hours, Toby becomes fixated on getting him a proper burial.

In preparation for the Friday night briefing for the Saturday papers and news broadcasts -- nicknamed "take out the trash day" because it disposes of all the stories the White House doesn't want heavy coverage on, and because Saturday is the least read paper of the week -- the staff take on a variety of chores: C.J. prepares to meet with the family of a Matthew Shepard-type victim of murder just because he was gay, and discovers something unexpected about the young man's reticent father; Josh and Sam contend with an angry Republican house committee leader who wants to make a deal to avoid public hearings on Leo's alcoholism; the president must read and wince through a graphic report on sex education in public schools; Danny pesters C.J. about an aide to the v.p. living on high off of taxpayer dollars.

A drug dealer's appeal of the federal death penalty is rejected by the Supreme Court, which upholds the death sentence with execution scheduled for the following Monday. One of the defense lawyers on the case is Sam's old high school bully, and he appeals directly to Sam to involve the president. During a weekend in which he was supposed to be in a yacht race, Sam opts to stay at the W.H. and try to convince his fellow staffers and ultimately Bartlet that the president should commute the sentence. Meanwhile Josh, after a night of heavy drinking at a bachelor party, meets congressional campaign manager Joey Lucas while is hung over. She assails him for having the DNC cut off funding for her candidate, but the decision was deliberate, as the W.H. likes the conservative nutjob currently holding the Calif. seat. Opinions on the death penalty are exchanged throughout the weekend, including those of Quaker Joey Lucas and Toby's rabbi, and Bartlet winds up calling both the Pope and his old parish priest from N.H. for counsel.

The West Wing staff are feeling malaise as it seems they never get anything accomplished. Meanwhile, a leaked memo is a land mine that could embarrass the administration.

The staff waits for a poll to tell them if their new, activist policies are moving them in the right direction. C.J. feels like her opinions are being discounted.

Sam meticulously prepares a speech for the President to give to the environmental lobby, but Toby wants to sneak in some criticism of their failure to condemn environmental terrorism. Leo tries to convince the President to support his pet project - a missile defense shield - despite its continued failure to produce results, and the fact that it likely contravenes an anti-ballistic missile treaty. Several countries including Great Britain have sent new ambassadors to Washington to be recognized by the White House. C.J. travels to New York on a delicate mission to ask for a political favor from a comedian.

Comments made by Surgeon General Dr. Millicent Griffith concerning the medical effects of marijuana appear to reverse the President's stance on legalizing the drug.

The staff is hunkered down in the Bartlets' hometown of Manchester, N.H., where they work with political consultants Bruno, Doug and Connie on the president's official announcement that he'll be seeking a second term; meanwhile, they all lament various W.H. events of the previous four weeks, including a huge strategic mistake by Josh, a pivotal FDA announcement scheduled for the same day as the president's speech, an ongoing battle between then president and first lady, and a major press room gaffe by C.J.

After a fatal shooting in Texas, the president asks Hoynes to go down there and speak out for gun control, in spite of his history opposing it. Donna makes a gaffe in front of the Congressional committee. Leo argues with an old friend about the creation of an international war crimes tribunal.

On the day before Thanksgiving, CJ has to deal with two Stockbridge-Munsee Indians who won't leave the lobby until they get an answer on an application their tribe submitted 15 years ago. Josh tries to arrange the extradition of an underage boy whose parents sent him to Italy after he killed his teacher. The President learns why Abby wants to have Thanksgiving at Camp David this year, and places an anonymous call to the Butterball Hotline.

Toby is concerned when President Bartlett forgoes an opportunity to speak out in favor of affirmative action during the Iowa caucuses and confronts the President on the real reasons underlying his Dr. Jekyl & Uncle Fluffy personality shifts. Meanwhile Josh makes plans for a vacation with Amy and then must cancel them.

Poet laureate Tabitha Fortis visits D.C. to attend a White House dinner in her honor, and Toby develops a bit of a crush on her, but he also must admonish the somewhat flighty beauty against publicly criticizing the president for his refusal to sign an international anti-land mine treaty; Donna discovers a website devoted to Josh, and he soon becomes sucked into the online chat about his activities and ego; speaking via remote to a local morning show in Philadelphia and unaware that the mike is on, Bartlet makes a stray comment impugning opponent Robert Richie's intelligence, for which the staff, particularly C.J., takes a lot of heat from Richie campaign and the press.

A meeting with the new Russian president becomes politically dangerous when surveillance photos show Russia building a nuclear reactor in Iran. C.J. is assigned Secret Service protection after receiving death threats.

Bartlet, Leo, Sam, Toby, and C.J. travel to New York City for a Catholic fund raiser at a long Broadway play called "The War of the Roses". Josh steps up his efforts to beat his girlfriend, Amy, in their struggle over the welfare reform bill, which leads to her forced resignation. C.J. and Secret Service agent Simon Donavon have grown closer, but a tragic event cuts short their relationship. At the play, Bartlet comes face to face with Republican Presidential candidate Rob Ritchie and faces the decision of whether or not to assassinate the Qumari Defense Minister.

After Bartlet gives a campaign speech at an Indiana farm, Josh, Toby and Donna are left behind by the presidential motorcade and must work their way across the state with the help of the farmer's daughter and, later, a teenage campaign volunteer, enduring many setbacks along the way. Josh and Toby obsess and bicker over how best to play the president's intellectualism, viewed by many as snobbery, against Republican opponent Robert Ritchie's "regular guy" persona, while Donna must keep them on track and communicate with the real Americans they encounter along the way. Back at the W.H., the president deals with a terrorist attack at an Iowa college swim meet, meets with Leo, Nancy and Fitzwallace to discuss how to handle the prospect of the U.S. and/or Israel being accused of a conspiracy in the assassination of Qumari defense minister Abdul Shareef, and interviews secretarial candidates, including a second round with Debbie Fiderer; the wandering party finally arrive at a city with an airport (presumably South Bend) and stop briefly at a nearby hotel, where they learn about the Iowa attack and Donna chastises the two men for caring only about the campaign and not the people it affects; later in the hotel bar, Josh and Toby meet a man trying to figure out how to pay his daughter's tuition to Notre Dame, and he inspires them to initiate new tax policy.

Donna teaches Toby and Josh an important lesson as their trek homeward continues; Sam staffs the President in Josh's absence and welcomes an old friend home; Bartlet hires a secretary and C.J. finds a Big Brother for Anthony; the situation in Qumar continues to escalate; Bartlet gets spooked by a photo op as the Dow continues its dive; and a pipe bomb kills 44 students at a Midwest university swim meet.

A 15 year old boy needs a heart and lung transplant. He also happens to be the son of the Iranian Ayatollah who is not a supporter of the Bartlet Administration.

Women's groups, by default including the majority of the First Family, react passionately as a renowned female fighter pilot is sanctioned for an affair with a senior officer. Meanwhile Sam prepares for his campaign.

The president, first lady and w.w. staff travel to Orange County, Calif., to campaign for Sam's bid to win the 47th District congressional seat -- the Nov. winner in the heavily Republican district was, amazingly, a liberal Democrat who, more amazingly, had died a few weeks prior. The president orders Toby to fire Sam's campaign manager, a staunch realist, and take over the campaign with a more idealistic approach. Some conservative voters approach Andrea Wyatt in a bar and give her grief about her out-of-wedlock pregnancy, and Toby and Charlie step in forcefully, landing them in jail. Donna talks, on behalf of Sam's campaign, with a state labor leader who turns out to be a Communist.

Military action in Africa has unforeseen repercussions. Sam and Toby work together on the Orange County Campaign. Will has to find his leadership skills quickly as he is left with no one but interns to prepare remarks on the dry subjects of Taxes.

Trying to participate in a late-night staff poker game proves difficult as news arrives that an unmanned U.S. spy plane has crashed in a remote part of Russia, and Bartlet and Leo have to deal with an incensed Russian President Chagorin and convince him via phone to let the military go in and recover the plane; C.J. obsesses over the fact that on the exact moment of the spring equinox (today), you can stand an egg on end; Toby and Will have a card-flipping contest in the press room, during which someone from the street fires several bullets into the room; Debbie must "crash" the West Wing for the first time when the bullets fly; at the same time, Josh is interviewing associate counsel applicant Joe Quincy, and there's something about the well-qualified lawyer that bothers Josh, which he deduces during the lock down.

Zoey Barlet has been held for over a day. An international crisis looms that could have serious repercussions for the administration, let alone the hostage.

Multiple members of the team start questioning the direction of the White House, including one member entertaining job offers. Those who aren't are starting to stumble, including Josh and Amy.

Leo is left manning the fort when the President goes AWOL whilst visiting tornado victims. Josh is not in the position to lend a hand as he deals with the fallout from a gross miscalculation and lack of judgment.

A nuclear device is tested in the Indian Ocean, but none of the known nuclear powers will claim responsibility, leading to the possibility of a terrorist group holding missile tests. Vice President Russell, heretofore dismissed by west wing staff as a joke, a four-term congressman alleged to be securely in the pocket of a large Colorado mining company, recalls a junket he'd taken early in his political career in which a drunken Israeli statesman confessed to secret missile tests. Russell visits the sit. room and puts the military and national security leaders at ease, leading the president and Leo to reassess the man's political gravitas. Bartlet then drags the Israeli p.m. to the White House, where they debate the power of the U.S. to dictate which states should have nuclear capabilities.

The President finds himself at odds with Leo, and the entire country, on his position regarding retaliation for the bombing in Gaza.

Magicians Penn and Teller give a controversial performance at Zoey's birthday party in the White House that threatens to drown out the news of the impending China trip. President Bartlet goes to New Orleans on his way to China after unexpectedly requesting briefings be postponed until they are in the air. Josh tries to decide which Democratic presidential candidate he wants to support, and is alarmed that Bartlet wants to appoint California Republican Senator Arnold Vinick to be Ambassador to the United Nations.

On the same day that an anti-gay-marriage amendment is attached to the federal budget, an Internet rumor surfaces that C.J. is a lesbian. Josh and Toby attempt to kill the amendment without forcing the President to publicly take a position on this unwinnable issue. Congressman Santos considers Josh's proposition that he run for President despite having told his wife that he's done with politics. Donna begins her new job while Josh struggles to cope with her difficult replacement. Abby and C.J. meet with the President's doctors to decide how to adapt his schedule to the increasingly debilitating effect of multiple sclerosis.

CJ and Abbey go twelve rounds on how to handle President Bartlett and his disease. Lord Marbury makes his return to the White House after a British commercial plane gets shot down by Iran. Toby splits his time between helping write a Belarus constitution and the yearly meeting with Miss World

While Vinick and the Republicans deliver a flawless albeit predictable convention, the Democratic convention looks to be more like a pie fight as there is no clear favorite. Russell tries to preempt the floor vote by hinting offers of the vice presidential nomination to both Santos and Governor Baker of Pennsylvania. Charlie and Zoey's relationship is becoming more serious, resulting in different reactions from the President and the First Lady. An air leak on the International Space Station will kill all three astronauts unless a rescue mission can be launched. NASA advises that their shuttles are unfit for flight, but then hints at another solution.

WHO WILL BE THE DEMOCRATIC PRESIDENTIAL CANDIDATE? - It's the Democratic National Convention and the race to become the Democratic Presidential candidate has narrowed to three candidates: Russell, Baker and Santos. Also, Bartlet must wrestle with the decision to launch the super-secret defense shuttle to rescue the astronauts trapped at the space station and risk national security or let them die.

Four days after the Democratic convention, Josh begins to staff up the Santos campaign. With Santos and Leo effectively strangers - and Leo not an experienced campaigner - adjustments of roles and responsibilities are required in order to deliver a strong and consistent message. The White House prepares to launch the military Space Shuttle on its rescue mission to the Space Station amidst growing suspicion that proof of its existence was deliberately leaked by someone in the Administration. The Republicans offer Bartlet a concession on an education bill in an attempt to drive a wedge between him and the Santos campaign.

Despite vigorous campaigning, the Santos campaign still struggles to articulate its message and keep the focus on domestic issues rather than gossip and trivia. Although Santos served decades in the military and remains in the reserves, Vinick still appears the stronger candidate on national security issues due to stereotypes about Republicans and Democrats. The White House's decision to halt their own investigation into the leak is a savvy legal move, however it could prove to be costly politically: while Vinick can slam the President for this decision, it's not so easy for Santos to do so. Josh reluctantly recruits help with running the campaign when it becomes obvious that he's trying to do too much himself.

The Santos campaign faces questions on intelligent design and evolution during a campaign stop focusing on education in Pennsylvania. Margaret testifies before the committee investigating the leak, which has also served most current and former members of the Bartlet administration with subpoenas. A suicide bombing in the Middle East throws the region into chaos and threatens to postpone all campaigning. An intelligence analyst assigned to brief the Vinick campaign demands to speak with CJ.

Toby's confession sends shock waves through the White House; Kate tracks developments following the assassination in Kazakhstan; the Santos campaign appears stalled.

A nuclear accident in California sends the White House and both campaigns into overdrive. Meanwhile, China and Russia appear headed for a showdown over elections and oil in Kazakhstan.

Polls are closing across the country, and the race is too close to call; friends and colleagues react to the news about Leo.

President Bartlet and his current and former staffers come together for Leo's funeral.

Santos and his staff prepare for the inauguration as Bartlet and his team look back on their years in the White House.