You also need a less supine press. It really doesn't matter how you mess with the voting system if there isn't a premium put on critical analysis -- not only clear reporting what was said and done, but actual "no that's just not true" bullshit-calling. Any journalist that has 2+ different viewpoints presented and the best they can do is say "well this certainly is an interesting discussion" should be fired on the spot. People can't be forced to think before voting, but at least they stand a chance if there's good data presented to them.