Well, nobody wants to hear a debate. People are too loving stupid to understand the concept of debates.
And there's a reason there's a 2 party system. Look at how Youtube changed from the 1-5 voting system to the Like/Dislike. People who vote 2-4 stars wasted their vote and wont have as much an affect as opposed to people who vote 1 or 5. It has to be polarized, and it's tactically wise to do so. If you narrow down choices to 2 people, at least there's a big chance the guy you kinda like will win.
I'm going to register for the draft and sign up as a republican simply to vote for Ron Paul. Even though he's a crazy old tribal moralist, I have more faith in him than any other crazy old tribal moralist on the republican ballot.