Steve Schmidt, a senior adviser, said no matter who the nominee was, the campaign was ready to send a "jump team" to the No. 2's home state to work with the nominee's staff, work with the local media and help handle requests from the national media for information, and answer questions about documents that were part of the review.

At several points throughout the process, McCain's team warned Palin that the scrutiny into her private life would be intense and that there was nothing she could do to prepare for it.

Culvahouse disclosed details of his examination in a half-hour interview with the AP.

First, a team of some 25 people working under Culvahouse culled information from public sources for Palin and other prospective candidates without their knowledge. For all, news reports, speeches, financial and tax return disclosures, litigation, investigations, ethical charges, marriages and divorces were reviewed.

For Palin specifically, the team studied online archives of the state's largest newspapers, including the Anchorage Daily News, but didn't request paper archives for Palin's hometown newspaper. "I made the decision that we could not get it done and maintain secrecy," Culvahouse said.

Reports, 40-some pages and single-spaced, on each candidate then were reviewed by McCain, Schmidt, campaign manager Rick Davis and top advisers Mark Salter and Charlie Black.

Among the details McCain's campaign found: Palin had once received a citation for fishing without a license.

Palin, like others on the short list, then was sent a personal data questionnaire with 70 "very intrusive" questions, Culvahouse said. She also was asked to submit a number of years of federal and state tax returns, as well as any controversial articles she had written or interviews she had done. The campaign also checked her credit.

Then, Culvahouse conducted a nearly three-hour-long interview.

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Liz Sidoti reported from St. Paul, Minn.