This argument suggests a solution.

We worry about "the rich" buying political office. Some of our fellow citizens seem to think politics should be just another market, like stocks, commodities, groceries or drugs.

But if we are going to allow the rich like Spitzer, Corzine, Kennedy, etc. to use their own wealth in their political campaigns, then they should SIGN A CONTRACT!

The candidates platform should set the deliverables, the office's term should set the delivery schedule, and failure to deliver on time should be subject to civil court proceedings under contract law. ...then watch how much more deeply the candidates will research the issues and more honestly talk about practical solutions!