The Walking Dead, Season 1 (video game):
I'll just stick to the main characters.
Lee Everett: Democrat or Independent. (Even that would probably be up to the player's choice.)
Clementine: Too young to vote/care
Duck: Also too young to vote/care.
Larry: Republican, probably of a neocon flavoring.
Lily: Most likely Republican, likely has similar views to her father.
Kenny: Independent or Republican, seems like he would be either in the Tea Party or the social conservative camp.
Katjaa: Might be apolitical about her politics due to her Belgian nationaly; I don't think the game lets us know if she is a naturalized US citizen or not. Assuming she is and is political, she might be a liberal due to her European roots and uncomfortable attitude regarding guns.
Carley: Maybe a Democrat, but I only guess that since she's a journalist. However, she might be very moderate or might even be Independent or Republican since she very willingly carries a gun around.
Doug: Most likely Libertarian due to his IT background.
Omid: Democrat. (I'd heavily bet on it since he's from San Fransisco.)
Christa: Democrat. (Same reason as Omid.)
Herschel: I'll go with Wolverines34's judgement.
Ben: Unless he's 18, he is too young to vote. He is most likely a Democrat or Libertarian due to his age, but since he is from Stone Mountain, he might be an Atlanta Metro Republican.
Yeah idk I feel like Herschel is a light conservative.