Penny Griego

After winning the Republican nomination for presidency, Arnold Vinick (recurring guest star ALAN ALDA) begins working on his campaign. Bruno Gianelli (recurring guest star RON SILVER - 'Ali'), a political strategist, gives the Republican candidate advice about choosing a vice president and handling Vinick's latest controversy--his failure to attend church. Meanwhile, the Democrats are stuck in a three-way race for enough delegates to win the Democratic nomination; Russell (recurring guest star GARY COLE) barely leads Santos (recurring guest star JIMMY SMITS); and Hoynes (recurring guest star TIM MATHESON--not appearing in this episode) is now a distant third. Bartlet tries to show unity in the party by wrangling the candidates. Also available on iTunes and VUDU

Santos (recurring guest star JIMMY SMITS) travels to Sacramento, California, for the last few days before Super Tuesday (a day when a large number of states simultaneously hold their primary elections; the single day when the most nominating delegates can be won). While he's trying to gather support for his healthcare agenda, Santos is pressured by the media to reveal his stand on California legislation that would provide driver's licenses to illegal immigrants. Russell (recurring guest star GARY COLE) decides not to go to California, and Hoynes (recurring guest star TIM MATHESON) capably dodges the issue. Meanwhile, Donna takes a more proactive role in the Russell campaign by becoming the new spokesperson. Also available on iTunes and VUDU

On Valentine's Day, an Iranian fighter jet accidentally shoots down a British passenger plane--killing 100 people--but C.J. is reluctant to awaken the President even as the hawkish British prime minister considers bombing Iran's nuclear reactors in retaliation. After learning that the passenger jet was mistaken for a U.S. spy plane, Bartlet consults with British ambassador Lord John Marbury (recurring guest star ROGER REES - 'Cheers'), and they debate whether a strike is the perfect excuse to destroy the atomic sites or if it would set back reform movements in Iran. Meanwhile, Abbey and C.J. feud over the President's schedule for total rest; Toby and a legal professor try to write a new democratic constitution with representatives of Belarus; and everyone keeps dodging the traditional White House appointment with Miss Universe. CHRISTOPHER LLOYD ('Taxi,' 'Back to the Future' films) guest stars as law professor Lawrence Lessig. Also available on iTunes and VUDU

On Election Day, Bartlet and his staff begin counting exit poll votes across the country. In a conservative California congressional district, the results have important implications for Sam and a maverick Democratic campaign manager, Will Bailey (recurring guest star JOSH MOLINA). Meanwhile, Donna meets an intriguing Navy Commander, Jack Ross (recurring guest star CHRISTIAN SLATER - 'Windtalkers,' 'The Contender'), who has been transferred to the White House as Deputy Military Aide. Also available on iTunes and VUDU