Futures traders and sports books are setting overwhelming odds that the Illinois Democrat will win the presidency on Nov. 4.

Ladbrokes, a massive online sports book based in the United Kingdom, puts the odds of an Obama win at 1-10, meaning a bettor must risk $10 to win one more. John McCain, meanwhile, is an 11-2 shot, so a dollar posted on him would pay out an additional $5.50. The site now pays out less for a bet on Obama winning in a 370-plus electoral landslide than it does for a McCain victory of any margin.