| Rob Lowe | Sam Seaborn |
| Dulé Hill | Charlie Young |
| Allison Janney | C.J. Cregg |
| Janel Moloney | Donna Moss |
| Richard Schiff | Toby Ziegler |
| John Spencer | Leo McGarry |
| Bradley Whitford | Josh Lyman |
| Martin Sheen | President Josiah Bartlet |
| Stockard Channing | Abbey Bartlet |
| Emily Procter | Ainsley Hayes |
| Marlee Matlin | Joey Lucas |
| Corbin Bernsen | Henry Shallick |
| Tony Plana | Mickey Troop |
| Richard Riehle | Officer Jack Sloan |
| Kathryn Joosten | Dolores Landingham |
| NiCole Robinson | Margaret Hooper |
| Ted McGinley | Mark Gottfried |
| Bill O'Brien | Kenny Thurman |
| Glenn Morshower | Mike Chysler |
| Gregory Alan Williams | Robbie Mosley
(as Gregalan Williams) |
| Barbara Eve Harris | Gretchen Tyler |
| Melissa Fitzgerald | Carol Fitzpatrick |
| Kim Webster | Ginger |
| Devika Parikh | Bonnie |
| William Duffy | Larry |
| Peter James Smith | Ed |
| Mindy Seeger | Chris |
| Bradley James | Secret Service Agent Donnie |
| J.P. Stevenson | Reporter Jonathan |
| Kelly McNair | Pollster |
| Jon Hershfield | Pollster #2 |
| Keith Mills | Mr. Finney |
| Sean Patrick Murphy | Floor Manager |
| Ralph Meyering Jr. | Tom |
| Molly Schaffer | Staffer |
| Thomas Spencer | Military Aide Thompson |
| Marvin Krueger | Officer #2 |
| Michael Francis Clarke | Congressman Satch |
| Doris E. McMillon | Newscaster
(as Doris McMillon) |
| Larry Carroll | Newscaster #2 |
| Susan Krebs | Gail Schumer |
| Al Collado | Reporter
(uncredited) |
| Sean Allen Jones | Uniformed Secret Service Agent
(uncredited) |