As Austin360 reported, Nelson brought O’Rourke on stage during his Fourth of July Picnic summer concert. Now he’s doubling down on his support by joining Joe Ely, Carrie Rodriguez, Tameca Jones and his two sons, Lukas and Micha Nelson, at the Sept. 29 rally.

“My wife Annie and I have met and spoken with Beto and we share his concern for the direction things are headed,” Nelson said in the press release provided to the outlet. “Beto embodies what is special about Texas, an energy and an integrity that is completely genuine.”

Despite clearly being in favor of the Democratic candidate, Nelson’s fans were taken aback by the news that he’s supporting a candidate whose politics they don’t agree with.

“If that’s true im done after 45 years with the Red Headed Stranger, by [sic] Willy,” one user commented on the Facebook announcement.