You realize all these antics Kanye does is just to keep him in the public discussion? He doesn't release a ridiculous amount of music like a lot of rappers do, so he likes to keep himself in the discussion by doing these kind of things along with his other ventures like fashion.
Kanye for President is just another antic that will keep him in the mainstream media discussion. To say that he is influencing the political system is kind of a hyperbole.
Yeah, nah, I don't think any of us is taking that bit about running for Presidency seriously. I think he did make some valid points about other stuff though.