Rick Perry, who entered the Texas legislature as a Democrat in 1984, served as Al Gore’s Texas Campaign Chairman in the 1988 presidential campaign. Soon after the campaign, Perry switched parties and was elected Texas Agriculture Commissioner as a Republican in 1990. “Going through that (Gore experience) was part of what started me through the process of changing parties in 1989,” Perry later said. “I came to my senses.”
See my post 632 which gives evidence that Perry was NOT Gore’s Campaign Chair.
From: http://www.politifact.com/truth-o-meter/article/2011/sep/07/legend-al-gore-and-rick-perry
Was your info from Wikipedia which can be inaccurate?