WASHINGTON Mitt Romney's success in raising hundreds of millions of dollars in the costliest presidential race ever can be traced in part to a secretive data-mining project that sifts through Americans' personal information including their purchasing history and church attendance to identify new and likely, wealthy donors, The Associated Press has learned.

For the data-mining project, the Republican candidate has quietly employed since at least June a little-known but successful analytics firm that previously performed marketing work for a colleague tied to Bain & Co., the management-consulting firm that Romney once led.

The head of Buxton Co. of Fort Worth, Texas, chief executive Tom Buxton, confirmed to the AP his company's efforts to help Romney identify rich and previously untapped Republican donors across the country. The Romney campaign declined to discuss on the record its work with Buxton or the project's overall success.

The project shows that the same strategies corporations use to influence the way we shop and think are now being used to influence presidential elections. The same personal information that we give away, often unwittingly when we swipe our credit cards or log into Facebook, is now being collected by the people who might one day occupy the White House.

There are no records of payments to Buxton from Romney's campaign, the Republican National Committee or a joint fundraising committee. Under federal law, companies cannot use corporate money or resources, such as proprietary data analysis, for in-kind contributions to campaigns.

The effort by Romney appears to be the first example of a political campaign using such extensive data analysis. President Barack Obama's re-election campaign has long been known as data-savvy, but Romney's project appears to take a page from the Fortune 500 business world and dig deeper into available consumer data.

Buxton said he's working for the Romney campaign because he wants "to be on the winning team."

He once worked with a former Romney business partner to provide insights, for example, about where Petco should open a new pet-supply store to maximize profits. In addition to Buxton, the data-mining project was described to the AP by a Romney fundraiser who spoke on condition of anonymity because the fundraiser did not want to face repercussions for describing internal campaign processes.

Businesses use those kinds of analytics firms to answer key questions for clients, such as where to build a retail store or where to mail pamphlets touting a new product. The analysis doesn't directly bring in campaign contributions, but it generates the equivalent of sales leads for Romney's campaign.

The project relies upon a sophisticated analysis by powerful computers of thousands of commercially available, expensive databases that are lawfully bought and sold behind the scenes by corporations, including details about credit accounts, families and children, voter registrations, charitable contributions, property tax records and survey responses. It combines marketing data with what is known in this specialized industry as psychographic information about Americans.

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Mitt Romney's fundraising success traced to project that sifts through personal information