Prediction Markets Update (October 3, 2008)

The 2008.PRES.OBAMA Intrade contract now trades at 68.3, whereas the 2008.PRES.McCAIN Intrade contract is currently trading at 32.9 (compared with 67.4 and 32.6 respectively as reported on yesterday’s update).

The state-by-state contracts now imply that Mr. Obama holds a 338-185 “lead” over Mr. McCain (based upon my cutoff price point of 55 for allocating Electoral College votes). Since yesterday, Florida (27 Electoral College votes) has moved back into Obama’s column. At this point, the only “swing” state currently left is North Carolina (15 Electoral College votes).

FiveThirtyEight.com currently gives Mr. Obama a 333.2 to 204.8 advantage over Mr. McCain.

Addendum: October 3, 2008 Electoral College Vote allocation

Barack Obama (338): California (55), Colorado (9), Connecticut (7), Delaware (3), District of Columbia (3), Florida (27), Hawaii (4), Illinois (21), Iowa (7), Maine (4), Maryland (10), Massachusetts (12), Michigan (17), Minnesota (10), Nevada (5), New Hampshire (4), New Jersey (15), New Mexico (5), New York (31), Ohio (20), Oregon (7), Pennsylvania (21), Rhode Island (4), Vermont (3), Virginia (13), Washington (11), and Wisconsin (10)

John McCain (185): Alabama (9), Alaska (3), Arizona (10), Arkansas (6), Georgia (15), Idaho (4), Indiana (11), Kansas (6), Kentucky (8), Louisiana (9), Mississippi (6), Missouri (11), Montana (3), Nebraska (5), North Dakota (3), Oklahoma (7), South Carolina (8), South Dakota (3), Tennessee (11), Texas (34), Utah (5), West Virginia (5), and Wyoming (3)

A very interesting market statistic…

I just checked on the weekly return series on the SP500 dating back to January 1950, and I found that in the 3,065 weeks in this series, the % change in the S&P 500 during the course of this week (-9.4% from last Friday through today) is the fourth worst on record. The only weeks that were worse during this period were the week of the crash of ’87 (-12.2% net, inclusive of the more than 20% decline on “Black Monday (October 19)), the week leading up to 9/11 (-11.05%), and the first week of April 2000 (-10.54%).