@rabel22,
Again, I think you are part of the problem.
By knee-jerk voting against the incumbent, you are automatically taking yourself out of the process of positive reinforcement, where politicians who represent their constituents are rewarded. The late Ted Kennedy is a perfect example-- there is no doubt he represented his constituents (and I was one of them) and we deeply appreciate his service.
Also, assuming you went Edwards-Clinton-Obama, you need to realize that although you ended up with your third choice, there were many of us who had good reason for supporting Obama. I supported his candidacy with good reason, and I didn't receive money from any special interests as a result.
I don't understand how anyone can really say that the difference is slight. This makes absolutely no sense.
Does anyone, after the Iraq war, the wiretapping scandal, the torture scandal, the tax cuts for the rich not think that a Gore presidency, would not have been drastic different then what happened?
Do you really think that with McCain would have enacted Lily Ledbetter, would have moved decisively on the stimulus or would be anywhere near where we are on health care reform?
I think your negative attitude is harmful. At the very least you are choosing not to participate in political life and you are excluding your voice and influence from what is, for all its foibles, a well functioning and vibrant political system.