The two books I read weren't centered on politics, it was more politics constrained the main character as he is a prince of the blood, but the next book coming in... I believe it's either June or July looks to have quite a bit of politics in it due to it focusing on a political scandal involving the main character and the royal family(ies) of two nations.
For the most part, the books tended to showcase more his attempting to escape from politics and, later, how he was able to except his role in politics, but fled due to emotional/sexual/moral reasons. The books are about the son of the nation's greatest traitor who is attempting to find his place in society while having his parents', mainly his mother's, legacy looming over him and the weight of being a prince on his shoulders. It jaunts through a number of places, from a life as a shepherd boy in the mountains of northern Europe to a Roman-esque nation now turned scholastic, back up to the UK area where the land is ruled by a coalition of dark-skinned celtic tribes and the waters are policed by a sorcerer empowered by the teachings of an angel now defeated. It's a combination of politics and mysticism, with a bit of engineering thrown in every once in a while by Joscelin's people.
I'm kind of rambling, so I'm going to shut up now unless you have something else you'd like me to elaborate/talk about.
Oh, and Neverwhere is another good Neil Gaiman book if you're thinking about reading some of those.