There are a number of markets that trade bets on things like who will win the election. They trade the bets on a price scale like stocks, and it's interesting to note that graphs of Obama's Presidential chances are the exact opposite of graphs of the Dow Jones Industrial Average. In other words, the more likely it seems that Obama will be our next President, the more the stock market falls. Probably a coincidence, but the graphs are stunning in their contrary nature. Notice how around the start of June, the Dow spikes up right when Obama has a downward spike. Correlation does not equal causation, but it sure is interesting.

The Dow Jones graph
The Obama graph