Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE (R-Ariz.) said Monday evening that he sometimes feels like he doesn't belong to a political party.

“I sometimes feel like a man temporarily without a party,” he said during a speech at the New Hampshire Institute of Politics at Saint Anselm College, according to The Washington Post.

Flake also criticized his party during the speech, saying members of the GOP have "given in to the terrible tribal impulse that first mistakes our opponents for our enemies."

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“And then we become seized with the conviction that we must destroy that enemy," he said.

Flake's speech came days after he voted in the Senate Judiciary Committee to recommend Supreme Court nominee Brett Kavanaugh for confirmation by the full Senate. He also said at the time, however, that he would support Kavanaugh in the full Senate only if there were first an FBI investigation into accusations of sexual misconduct against the nominee.

Flake's call for an investigation, and Republican Sens. Susan Collins Susan Margaret CollinsSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE's (Maine) and Lisa Murkowski Lisa Ann MurkowskiSenate GOP aims to confirm Trump court pick by Oct. 29: report Senate GOP sees early Supreme Court vote as political booster shot Pence defends Trump's 'obligation' to nominate new Supreme Court justice MORE's (Alaska) subsequent support of Flake's suggestion, prompted President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE to ask the FBI to reopen its background investigation into Kavanaugh.

Flake said Monday that the investigation needs to be a "real investigation," according to the Post.

“It does no good to have an investigation that just gives us more cover,” Flake said. “We actually need to find out what we can find out. And we have to realize that we may not be able to find out everything that happened.”

The Senate currently plans to vote on Kavanaugh "this week," according to Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Senate GOP aims to confirm Trump court pick by Oct. 29: report Trump argues full Supreme Court needed to settle potential election disputes MORE (R-Ky.).