I Am A former United States Senator who ran for President in 2008. AMA.
I was a senior staffer on US Senator Mike Gravel's campaign when he ran for President in 2008; I told him about Reddit and he'd love to do an AMA.
If you'd like, post your questions for the Senator here and I'll have him answer most or all of them over the coming days. Sound good?
EDIT 2: Mike loves this! We just spoke on the phone and he said he'll answer every question he can; if we get a lot of posts I'll send those with the most upvotes to him!
Edit 3: Thanks to the suggestion of redditor vermithraxPejorative, here's a link to Mike's stance on the issues.
Edit 4: Wow! Thanks for all the questions! I'm sending as many of these to Mike as I can, so keep asking. In the near future, he'll do another one of these where he'll commit to spending a few hours sitting at his computer!
12:30 PM EST Update: I sent a pretty large batch of questions to Mike, including, most notably, redditor SuperAngryGuy's question located here. If he doesn't email me back tonight, I'll call him tomorrow morning. I'm really curious about the answer to that question, myself.
1/15/2011 Update: Hey folks, Mike just e-mailed me his responses to some further questions below. I'll post those below!