My trading in November (assuming a close race) is more predicated on knowledge of what happens to those betting markets throughout the day of the election than any political knowledge.

As you pointed out though, I can't make retirement money on that small of volume. I might be able to make vacation money though.

Also I should check to see if there's a difference in odds between betfair and intrade. Might be able to run some sort of cross-site arbitrage if possible.