Intrade: Obama -5 in 5 days

On Tuesday, Sept. 3, Barack Obama's stock on Intrade soared to nearly 62%, but today has dropped to 57%.

Meanwhile, John McCain's Intrade stock, which traded around 37% through most of August, and was at 39% on Sept. 3, has risen to 42%.

So Obama's advantage was 23 points (62%-39%) just five days ago, but has now slipped to 15 points (57%-42%).