Candidates Arnold Vinick (Alan Alda) and Matthew Santos (Jimmy Smits) flex their campaign muscles - and rely upon the frenetic behind-the-scenes strateging of pollsters, spin doctors, power brokers and policy wonks - as the race for the White House comes down to the wire. Season 7 marks both the beginnings of a new administration and the series' end with 22 episodes that include a compelling Vinick/Santos debate performed live. Other highlights: President Bartlet (Martin Sheen) confronts nuclear saber rattling. And the untimely death of star John Spencer takes the storyline in an unexpected direction. "Johnny, it seems we hardly knew you," Sheen says in an on-air tribute. What we do know and have here are Spencer's last contributions to the greatness that is The West Wing.