Allison Janney and Bradley Whitford become series regulars in The Diplomat
- Allison Janney and Bradley Whitford have been promoted to series regulars for Season 4 of The Diplomat.
- Janney's character became the new president after the prior president's death.
- The addition of Janney and Whitford is expected to enhance the show's dynamic and audience engagement.
Netflix has announced that Allison Janney and Bradley Whitford will join the cast as series regulars for the fourth season of the political drama "The Diplomat." This announcement was made on September 26, 2025, and follows the introduction of Janney in Season 2, where she played Vice President Grace Penn. Whitford joined the series in Season 3 as Todd Penn, Grace's husband. The Diplomat, which stars Keri Russell as Kate Wyler, a CIA agent who becomes an ambassador to Britain, has gained popularity for its intriguing plot and character dynamics. Showrunner Debora Cahn praised the chemistry and collaboration between the cast, referring to them as an "insane bag of candy" in terms of their performances together. The fourth season is anticipated to build on the established relationships in the series, as Janney’s character steps into a more significant role following the previous president's unexpected death, which adds layers to the political landscape depicted in the show. Fans are also looking forward to the dynamic changes that the inclusion of Janney and Whitford's characters will bring to the story.