Donald Trump Donald John TrumpREAD: Cohen testimony alleges Trump knew Stone talked with WikiLeaks about DNC emails Trump urges North Korea to denuclearize ahead of summit Venezuela's Maduro says he fears 'bad' people around Trump MORE on Tuesday went after John McCain John Sidney McCainGOP lobbyists worry Trump lags in K Street fundraising Mark Kelly kicks off Senate bid: ‘A mission to lift up hardworking Arizonans’ Gabbard hits back at Meghan McCain after fight over Assad MORE (R) after the Arizona senator withdrew his support for the Republican presidential nominee.

"The very foul mouthed Sen. John McCain begged for my support during his primary (I gave, he won), then dropped me over locker room remarks!" Trump tweeted Tuesday.

The very foul mouthed Sen. John McCain begged for my support during his primary (I gave, he won), then dropped me over locker room remarks! — Donald J. Trump (@realDonaldTrump) October 11, 2016

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McCain rescinded his support for Trump last weekend after the release of a 2005 tape in which Trump can be heard making lewd comments about women. In the tape, Trump describes how he could grope and kiss women without their consent because of his celebrity status.

Trump brushed off the tape as locker room talk, but the GOP nominee has faced backlash from Republicans since its release. Many Republicans have rescinded their support for Trump and some have called for him to drop out of the presidential race.

In response, Trump on Tuesday tweeted that the "shackles have been taken off," adding that he can now "fight for America the way I want to."

McCain said in a statement Saturday that he had wanted to support the Republican nominee.

"He was not my choice, but as a past nominee, I thought it important I respect the fact that Donald Trump won a majority of the delegates by the rules our party set. I thought I owed his supporters that deference," the Arizona senator said.

"But Donald Trump’s behavior this week, concluding with the disclosure of his demeaning comments about women and his boasts about sexual assaults, make it impossible to continue to offer even conditional support for his candidacy."

McCain on Monday said he may write in Sen. Lindsey Graham Lindsey Olin GrahamWhite House pleads with Senate GOP on emergency declaration GOP lawmaker says panel to investigate drug company gaming of patent system Sixteen years later, let's finally heed the call of the 9/11 Commission MORE (R-S.C.) when asked during an Arizona Senate debate whom he'll vote for in the presidential contest.

Trump has gone after McCain in the past. The GOP nominee said last year that the Arizona senator, who was tortured for years as a prisoner of war in Vietnam, was not a war hero because "he was captured."

"I like people that weren't captured, OK? I hate to tell you," Trump said at the Family Leadership Summit in July 2015.