“I've known Governor Perry for many, many years,” said Switzer, who coached the NFL's Dallas Cowboys from 1994-97.
Switzer said he held a fundraiser in his home for Perry a couple years ago.
Republican Gov. Mary Fallin was not planning to attend Monday evening's fundraiser, a spokesman said. She did not meet with him while he was in Oklahoma City.
Fallin did talk with Perry last week on the phone about his visit, said Alex Weintz, Fallin's communications director.
Oklahoma Democratic Party Chairman Wallace Collins said he isn't impressed with Perry's record as Texas governor. He said the middle class in Texas is losing its security to tea party economics and that Perry is too far to the right to lead the country.