The 22 major candidates running for U.S president, along with an even larger number of independent groups supporting them, raised an unprecedented $388 million in the first half of the year. This shows which neighborhoods this money came from.

The circles on the maps below show the relative size of the contributions. (All payments in each zip code were aggregated for clarity.) The result shows the disruption unleashed by the rise of big money in politics. While some large contributions came from traditional political fundraising centers like New York, Washington, or Miami—places that dominated prior to the dawn of the super-PAC era in 2010—many of the biggest checks are from elsewhere: northeastern Nevada, Omaha, Puerto Rico.

The next map shows only the contributions to super-PACs and other independent groups supporting a presidential candidate. These groups can accept donations of unlimited size from individuals, unions and corporations. (Campaigns can't accept corporate or union money and are limited to $2,700 per individual per race.) Notice that even in Democratic enclaves like New York and San Francisco, the big money is flowing mostly to GOP candidates.