If you like singleplayer games I would definitely suggest The Council, a great game with a lot of intrigue, but a linear story :>
CK2 is a great game for the political aspects of it, but like many other have said, the game falls a bit short when it comes to managing your settlement/land, sure there's some things set in place, but it's focus lies in the political landscape, your character development etc.
For political series (besides the ones that've been mentioned):
Versailles, interesting series, it got a few interesting political plots, not too much fluff and "young drama" like reign for example (only watch that for the clothes.
Harlots, not really your usual "political drama" when you think intrigue etc. but it's a more lower class political series, or that's the vibe I get from it anyway.