Johnson says he's been ignored by the media and GOP establishment, the St. Petersburg (Fla.) Times reported Tuesday.
"I think the Republican National Committee has hung me out to dry," he said during an interview in Clearwater, Fla. "I'm angry. Really angry."
Johnson, who supports abortion rights, gay rights and the legalization of marijuana, has been excluded from 15 of 17 presidential debates and has virtually disappeared from major political polling, the newspaper said.
He says he's not Republican enough for the GOP.
"They won't return my calls," he told the newspaper.