Here is Charles Spurgeon on politicians courtesy of the Pulpit Magazine.
In particular, we must keep ourselves unspotted from the lepers of the world. There is a certain number of leprous men in the world. You can tell them by their conversation; and sometimes you cannot help going very near where they are; but if you hear them cry, “Unclean!” just give them a very wide berth. . . . We are to keep ourselves from all spots of the world when we have to mingle with it. Notice, there are spots which come from your circumstances. . . .
[Among these circumstances] are politics; you know what party politics are. We are all trying to [usher] in another set of maggots to eat the cheese; that is about all it amounts to; first turn out one lot, and then turn in another. It comes to little more than that. Even in the pursuit of really good matters of policy, do you know any Christian man who goes into politics who is the better for it? If I find such a man, I will have him stuffed if I can, for I have never seen such a specimen yet. I will not say, do not attend to politics; but I do say, do not let them spot you.