(CNN) - Colin Powell and Rush Limbaugh escalated their war of words on Wednesday, with the talk radio host calling the former Secretary of State part of the "stale, the old, the worn-out GOP that never won anything."
The comments came hours after Powell fired back at Limbaugh and former Vice President Dick Cheney over recent remarks questioning his GOP credentials.
"Rush Limbaugh says, 'get out of the Republican Party.' Dick Cheney says, 'he's already out,'" Powell said at a Tuesday night event in Boston, according to the Boston Globe. "I may be out of their version of the Republican Party, but there's another version of the Republican Party waiting to emerge once again."
Powell drew ire from many in the GOP for his decision to endorse President Obama's candidacy, and said earlier this month that the party would be better off without Limbaugh.
On his show Wednesday, Limbaugh mocked Powell's comments. "And now there's an agenda, an emerging agenda, that he's waiting for for the Republican Party?" said the radio host. "The only thing emerging here is Colin Powell's ego. Colin Powell represents the stale, the old, the worn-out GOP that never won anything."
Limbaugh, who has been called the de facto leader of the Republican Party by leading Democrats, also said that he is resigning from the position.
"I am resigning as the titular head of the Republican Party," Limbaugh said. "Clearly I am not the titular head of the Republican Party, it's not an office I sought, it was an office position that rather was ladled onto me, and one I was appointed without by acquiescence."