I think I'm going to use this method - it's an interesting exercise, and it's a great excuse to get people to stop talking to me about bread-and-circuses politics (e.g. what's discussed in this blog post: http://www.tinyrevolution.com/mt/archives/000436.html ).
"Argument #1: Presidential candidates are noise. Unless you live in Ohio or Florida, your vote is foregone. If you want to be a good citizen, your time is probably best spent on convincing your friends to vote in local races. Or doing not-explicitly-political work that contributes to justice, peace and prosperity. A small career choice can do a lot more than the most forceful checkmark on a ballot."
This is an uplifting and encouraging message - and a far better argument in favor of anarchism than torching a Starbucks. Thank you.