Allison Janney and Bradley Whitford will be series regulars in The Diplomat Season 4. This news comes as Netflix prepares to release The Diplomat Season 3 in October.

The West Wing alums have been guest stars in the Emmy-nominated political drama until now. Janney first debuted in Season 2 as vice president Grace Penn. Grace became president in the Season 2 finale, and the aftermath of her ascension will be seen in the Season 3 premiere. Whitford makes his debut in the third season as Todd Penn, Grace’s husband, who is now the first gentleman.

Production on Season 4 is set to begin this fall, according to Variety .

Ahead of The Diplomat Season 3 premiere, here’s everything we know about The Diplomat Season 4. (Get an exclusive early look into The Diplomat Season 3 in our 20

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