The cast of political drama The West Wing are reuniting for a very special reunion episode. 

Martin Sheen, Rob Lowe, Dulé Hill, Allison Janney, Janel Moloney, Richard Schiff and Bradley Whitford are reuniting with creator Aaron Sorkin and director Thomas Schlamme for a stage performance of The West Wing, season 3 episode, Hartsfield's Landing, which aired in 2002.

The episode featured Sheen's President Barlet playing chess against Sam (Lowe) and Toby (Richard Schiff), while the Chinese are playing war games in the Taiwan Strait.

Meanwhile, White House Deputy Chief of Staff Josh Lyman (Whitford) was trying to round up votes in the New Hampshire presidential primary in the tiny community of Hartsfield's Land.

Sorkin is organising his first work with the cast in 17 years to benefit Michelle Obama's non-profit organisation When We All Vote to promote voter registration in the US ahead of the 2020 presidential US election.

It is reported the Michelle Obama will make a special appearance on the episode.

Speaking about the special reunion episode which will be available on HBO Max Sorkin said: "Tommy and I are incredibly excited to be getting The West Wing cast back together for this staged reading and to support When We All Vote in their efforts to get all of us involved in this election."

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