Meanwhile, rivalries between staff members and suspicions of defections kept the campaign from maximizing its resources, the report said. After Bachmann won the straw poll in August, 6,000 cards with contact information for supporters were sent to Washington for fear of them "disappearing into another campaign." They sat unused in her national office for eight weeks.

Bachmann, once a top-tier contender for the GOP nomination, dropped out on Jan. 4, the morning after she placed last out of the six candidates competing in the caucuses in Iowa, where the Minnesota lawmaker had staked her presidential campaign.