Imagine a micro chip with each transistor switching to process information. Now imagine that each of those transistors is an autonomous computer in its own right, processing its own information stream, which effects which way it switches. This is how I imagine each voter in Interactive Democracy. Each person makes a decision on which way to vote based on all the information and experience they have available. They are part of a huge social, organic computer (ID), designed to process information and optimise society for the common good.
(And this is the best reason I can think of for being 1 of 40 odd million voters in any democratic election.)