Campaigns routinely vet prominent supporters through public records, typically computer searches using Internet search tools Google or Lexis-Nexis.

NPR: Clinton to Return Funds from Fundraiser Hsu

When Lexis Nexis revealed the massive loss of personal data shares in its parent company, Reed Elsevier, dropped in value by only one per cent.

BBC: NEWS | Technology | Data safety at top of the agenda

On its website early Tuesday, The Daily Caller said neither of the women in the video identified herself as Nexis de los Santos.

NPR: Sen. Menendez Says He Looks Forward To Vindication

In the 10 years Berry was missing, the Cleveland Plain Dealer newspaper published 36 articles about her, according to a search of electronic news archive Lexis-Nexis.

BBC: Magazine

Our power rankings are based on a proprietary formula weighing salary, number of press clips returned on Lexis-Nexis, and by gauging popularity from searches on Dow Jones Interactive and Google.com.

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Vincio Castillo Seman, a Dominican lawyer, told reporters at a news conference Monday in the Dominican Republic that a woman identified as Nexis de los Santos now claims both that she "never went to bed with" Menendez and never actually met him.

NPR: Sen. Menendez Says He Looks Forward To Vindication

On April 11, information provider Lexis Nexis, a division of Reed Elsevier (nyse: RUK - news - people ), revealed that up to 310, 000 U.S. citizens may have had personal information stolen, including names, addresses, Social Security and drivers' license numbers.

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