Sen. John McCainJohn Sidney McCain#JohnMcCainDay trends on Trump's 73rd birthday #JohnMcCainDay trends on Trump's 73rd birthday New poll finds little GOP support for spending cuts to specific federal programs MORE (R-Ariz.) told supporters at a closed-door fundraiser that presumptive GOP presidential nominee Donald TrumpDonald John TrumpTrump defends Stephanopolous interview Trump defends Stephanopolous interview Buttigieg on offers of foreign intel: 'Just call the FBI' MORE will hurt his chances for reelection.

“If Donald Trump is at the top of the ticket, here in Arizona, with over 30 percent of the vote being the Hispanic vote, no doubt that this may be the race of my life,” McCain said in Arizona last month, according to Politico.

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"People are angry, they're upset, they feel that there's this disconnect," he continued.

“If you listen or watch Hispanic media in the state and in the country, you will see that it is all anti-Trump. The Hispanic community is roused and angry in a way that I've never seen in 30 years.”

McCain said in the recording that it is going to be a "tough campaign" for him.

“Frankly there’s an element of nativism in it as well, as you know. The first wedge that Donald Trump had that gave him notoriety was, ‘Build a wall,’ ‘rapist,’ ‘murderers,’ etc.,” McCain said.

McCain will face off against Rep. Ann KirkpatrickAnn KirkpatrickDemocrats face voters clamoring for impeachment Arizona Dems ask DHS to appoint 'crisis coordinator' at border Democrats introduce bill to let 'Dreamers' work for Congress MORE (D-Ariz.) in November as he seeks to keep his Senate seat.

Kirkpatrick agrees that McCain's support of Trump will likely have a negative effect.

“Latino voters in Arizona, and especially young Latino voters, are going to play a huge role in who will represent Arizona for the next six years,” she recently said, according to Politico. “They are absolutely appalled by Trump’s hateful rhetoric.”