At least that's what I thought.
I've come to realize that being informed about politics not only makes you an informed voter, but also keeps you from jumping on political bandwagons built on misinformation and propaganda. People making claims that they have no proof about or joining movements without regard to knowing what the movement is actually about is how really bad things happen: like the Holocaust, or the Communist "witch hunts" during the middle of the 20th century, or even politicians passing legislation they haven't even read.
Being informed on what the government is doing is my duty as a member of society. If I don't keep an eye on the government, who will? Even if there's just one topic that you follow politically, that should allow you to be fairly knowledgeable about the world of politics, because nearly every political decision makes enough ripples to effect other laws and political groups in some form or fashion. The mere implications of a certain law being passed or a court decision may be enough to make some difference in the area of politics you are involved in. I'm not saying politics needs to consume your life, but what I am saying is that 15 minutes a day and read the headlines. Pick out a couple of articles and read them at lunch or in your down time during the evening. Check out the evening news (regardless of the political swing).
Stay informed. I'll try to as well.