Sen. Jeff Flake (R-Ariz.), who delayed Supreme Court nominee Brett Kavanaugh’s nomination in dramatic fashion last week, announced Friday that he would vote to confirm him.

Flake made his position known after a procedural vote on Friday morning.

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Flake announced his support for Kavanaugh last week shortly before the Senate Judiciary Committee voted to advance his nomination to the floor. But after being confronted in a Senate elevator by two women saying they were victims of sexual assault, Flake struck a deal with Democrats on the Judiciary Committee to delay a floor vote for a week to give the FBI time to investigate assault allegations against Kavanaugh.

He was hailed as a hero by liberals when he teamed up with GOP moderates Sens. Susan Collins Susan Margaret CollinsClub for Growth to spend million in ads for Trump Supreme Court nominee Maryland's GOP governor says Republicans shouldn't rush SCOTUS vote before election The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November MORE (R-Maine) and Lisa Murkowski Lisa Ann MurkowskiClub for Growth to spend million in ads for Trump Supreme Court nominee Pebble Mine CEO resigns over secretly recorded comments about government officials Maryland's GOP governor says Republicans shouldn't rush SCOTUS vote before election MORE (R-Alaska) to pressure Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.) to postpone a floor vote on Kavanaugh to give the FBI time to investigate sexual assault allegations.

After reviewing the FBI report Thursday, however, Flake said there was nothing in it to back up the allegations from Christine Blasey Ford, who says Kavanaugh sexually assaulted her at a party in the early 1980s when they were both in high school.

“Thus far we’ve seen no new credible corroboration, no new corroboration at all,” Flake said Thursday.

Republicans hold a 51-49 advantage in the Senate and cannot afford to lose more than one GOP senator without needing to rely on Democratic support to confirm Kavanaugh on Saturday afternoon. Murkowski voted against proceeding with Kavanaugh's nomination on Friday morning, and Collins is expected to announce Friday afternoon how she plans on voting Saturday.

Flake is considered a possible GOP challenger to President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE in 2020. Last weekend, he traveled to New Hampshire, a key early primary state.

The Arizona senator, who is retiring at the end of this term in early January, would be considered a long shot in defeating Trump during the primaries, and a vote to sink a conservative nominee who will shape the Supreme Court for years to come could kill any 2020 presidential ambitions as a GOP candidate.

Updated at 1:18 p.m.