On-topic: Best political comedy films

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Comedies about politics find the humor in real-life situations, regardless of party affiliations. The list below is hardly exhaustive, and I would welcome any additions, preferably with some detail about the plot and message of the respective films. In general, what we are talking about here is cutting satire inspired by politics and politicians from all over the world. Obviously, political comedy is primarily intended to be funny, but underneath the comedy surface, there is a deeper message.

So what are your fave political satire pieces?

( A short list )