Correlation is not causation, and nothing on that site is evidence that money is winning the election. It is not surprising that the most popular politicians (winners) would also be the ones to get the most money, from people who like the official and others trying to buy influence.

According to the following article, large increases in campaign spending have a small impact on the poll results:

http://www.freakonomics.com/2012/01/17/how-much-does-campaig...