Cheney in '08: Corruption personified

I have an anonymous source, who has an anonymous source who is saying that Cheney is the guy in '08. I know I know, he has said over and over that he's NOT running, etc. Still, my source is extremely well connected and usually turns out to be right (and lately, i.e. for the past 5 years, that has been nothing but bad news). So this is a rumor right now but it brings up a point:

So what if it's true? How do you have a debate with a liar? My opinion: just work night and day to expose corruption. We can work on our platform, discuss values, and filibuster until we're blue in the face, but the only thing that makes a difference  is when the other side gets caught with their fingers in the cookie jar. That goes double for the house races in '06.