Karis Campbell

Dr. House treats a teenage supermodel for heroin addiction and, in the process, uncovers a startling secret about the girl. Meanwhile, Wilson hopes that House’s increased leg pain indicates that his leg nerves are regenerating.

An emissary from the Republic of Georgia visits the White House and offers weapons-grade uranium stored in a research reactor the Russians left behind when they pulled out of Georgia. Meanwhile, Josh looks for tax cut support from the Democratic Congressional Campaign Committee and along the way meets with Matthew Santos (recurring guest star Jimmy Smits - "NYPD Blue," "L.A. Law"), a bright and enigmatic congressman from Texas.

Josh is caught off guard when political commentators are critical of Leo as a running mate for Santos. White House Counsel Oliver Babish (recurring guest star Oliver Platt - "A Time to Kill") discusses a leak investigation with C.J. And Donna approaches Josh for a job.

Josh travels to New Hampshire with Santos (recurring guest star Jimmy Smits) to establish their campaign headquarters. But problems arise from the beginning when they set up the office in an abandoned shack, and personal differences about the campaign's goals become evident. Meanwhile, as Donna and Will work together on the Vice President's campaign, Will tells Donna that in order for their partnership to work, she needs to acknowledge that she is no longer on the same team as Josh.

The Midwestern state of Iowa is the location for the first presidential debate among the candidates. At the Iowa Corn Growers' Expo, Vice President Russell (recurring guest star Gary Cole) gives the first speech. Matthew Santos (recurring guest star Jimmy Smits) and Arnold Vinick (recurring guest star Alan Alda) follow, and the differences between the candidates become very clear. Josh struggles to understand how he can guide Santos in the race.