You're wrong and here's why.
What everyone calls "paritsan politics" isn't a bad thing. It's in fact indicative of the founder's genius - right now, the two party system is the only thing keeping this country from falling apart.
I'm not claiming that both parties aren't horribly corrupt - they clearly are. But they're not corrupt in the same ways. Democrats get paid by labor unions - and republicans get paid by big oil. Democrats have litagators and trial lawyers - republicans have DAs and State Attorneys. The two party system, and the fact that competing interests (at least in some cases) allow for a certain stasis - a middle area - which is certainly not ideal, but keeps us from falling off edge.
Go too far to the left or the right, and we fall apart. In the middle, it's corrupt as hell, but the system works. If only one side of the argument had a voice, everything would fall apart.
And as a response to the whole "throw them all out" argument - let me play devil's advocate for a minute. How long do you think it would take for all these new congressmen and senators to become just as corrupt as the people they replaced? (here's a hint: about 2 minutes after deciding to run).
According to one of the most prominent founding fathers, george washington, the two party system "...serves to distract the Public Councils, and enfeeble the Public Administration....agitates the Community with ill-founded jealousies and false alarms; kindles the animosity of one....against another....it opens the door to foreign influence and corruption...thus the policy and the will of one country are subjected to the policy and will of another."
I have no doubt of that. I'm sure that all of the founding fathers hated the idea - the reason this country exists is because the founding fathers were idealists to the highest degree - which is exactly why they would never have been able to predict the situation that we're in right now.
But my point of view - being a realist in the year 2010 - is that the two-party system is far from perfect - but much better than a one party system. In the real world, the status quo isn't always a bad thing.
And, in response to the rest of the quote - I think that the particular fear that Washington mentions in the quote above has yet to come true.