"I got mad. I walked out of a 60-minute interview in about 10 minutes. There's a rumor going around that I lost my temper. I can confirm for you today that that is true."
Each of the GOP Senate candidates sought out the Chamber's endorsement, but Perdue was seen as a contender because of his boardroom background.
Rob Engstrom, the Chamber's political director, has said Kingston was the group's pick because "he's someone we rely on to get something done."
There was no comment on why Perdue chose to speak about the meeting six days before the primary, but we surmise it's because it could be too late for the Chamber to unload negative ads against him.
Contacted Wednesday, Engstrom said Perdue did walk out of the meeting -- but not because of any ultimatum on the Chamber's part:
"Despite others attempts to dramatize the facts of our meetings, our endorsement was based on member input. The fact is that Jack Kingston is the only candidate with a proven record of fighting for America's job creators. We categorically never said Mr. Perdue needs to vote with us 100%, in fact our threshold for incumbents is 70% with very limited exception."
Kingston disagrees with the Chamber on some key issues, including immigration reform.
A person familiar with the exchange said Perdue said at the Atlanta meeting: "I don't give a damn about the U.S. Chamber." Perdue, according to the person who did not want to be named describing a private exchange, then added: "You're either in or you're out. You're either going to endorse me right now or this is a waste of my time. ... You've been waiting for a candidate like me for 20 years."
The second meeting in Washington went better, but the Chamber decided to back Kingston with an announcement in April.