Absolutely some of the worse, most disgusting people you will ever meet.
At least in relation to politicians, I can't help but to think of a line from one of my favorite movies, "Extreme Prejudice."
While conversing with Texas Ranger Jack [something] (a very, VERY skinny Nick Nolte), Rip Torn's character, Jack's lieutenant, exclaims something like, "Jesus, Jack! The only thing worse than a politician is a child molester!"
Bless Walter Hill and the ever-great John Milius for great dialogue
It's true, though, much as I hate to admit it. I'm just of the age at which I've known some rising politicians and, in all fairness, I can say that a fair percentage of them -- oh, perhaps one-quarter -- are good men and seem to mean well.
Nonetheless ... *sigh* Give that remaining quarter 10 years, and I would bet the whole farm they'll barely be recognizable. I can't entirely blame them, either ... politics is a cutthroat Darwinian game. Play the game and you might survive; don't, and hey, congrats: you can always go back to stocking shit at Lowe's or The Home Depot