Clinton campaign staffer called on Esterday at the restaurant Thursday after the story aired. The staff member apologized to her and gave her a $20 bill, according to Esterday. The Clinton campaign confirmed that visit. The campaign also produced photocopies of receipts showing $157.46 was paid to Maid-Rite on a VISA card on Oct. 8 for meals consumed by the candidate's entourage. The tip was supposed to have been paid in cash, and the campaign insisted such a payment was made but has declined to make available a staff member who was present at Maid-Rite and left tip money.

Maid-Rite's manager, Brad Crawford, said Thursday that while he was not present at the restaurant on Oct. 8, he knew that a bill was paid by the campaign that day. He also said that he believed three of six servers working that day received tips from people he thought were working for or affiliated with the Clinton campaign.

Crawford said he didn't know if campaign staffers meant "for their tips to be distributed to everybody" or whether they were meant only for individual servers.

The manager said he can't say for sure if Esterday was tipped for serving Clinton and her guests, Christie Vilsack and Ruth Harkin. (Vilsack is the wife of former Iowa Gov. Tom Vilsack and Harkin is the wife of Iowa Democratic Sen. Tom Harkin). But Crawford said he believes Esterday's account that she received no tip.

"Where Hillary was sitting, there was no tip left," Crawford said.