Two Ohio companies say their efforts to collect $25,000 for producing events have been unsuccessful, Politico reported. They complain that no one is returning their telephone calls or e-mails and one said a certified letter got no results.

Clinton has fallen behind her Senate colleague, Barack Obama, in fundraising. She is also limited in the amount of money she can spend in the primary campaign.

The campaign reported a total of $8.7 million in debts in its most recent filings. While much of the money is owed to political consultants, pollsters and advertising companies who expect to get their money late, the campaign also has outstanding debts of $3,500 to the Sioux City Art Center in Iowa, $15,000 to an Iowa-based supermarket chain for food and drinks and $7,700 to a theatrical employees union.