Sen. Richard Shelby (R-Ala.) says he plans to vote to confirm former Sen. Chuck HagelCharles (Chuck) Timothy HagelPentagon documents hundreds of serious misconduct cases against top brass Obama defense sec: Trump's treatment of Gold Star families 'sickens' me The Hill's 12:30 Report MORE (R-Neb.) as secretary of Defense, bolstering the embattled nominee who has faced sharp GOP opposition.

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"He’s probably as good as we’re going to get," Shelby said on Wednesday, according to The Decatur Daily.

Shelby's office confirmed that the senator from Alabama would back Hagel, provided there are no unexpected developments ahead of the vote.

"Yes, barring any unforeseen surprises brought to light before the vote, Sen. Shelby intends to support the nomination," Shelby spokesman Jonathan Graffeo confirmed to The Hill.

Senate Republicans last week blocked Hagel’s confirmation in a first-ever filibuster of a Defense nominee, after Democrats failed to win the 60 votes needed for cloture.

GOP lawmakers had demanded more information from Hagel and said delaying his confirmation would provide more time for them to weigh the nomination.

Senators are seeking access to his personal financial records to settle questions about whether he received foreign funding for paid speeches. In addition, some have raised questions about a speech in 2010 in which Hagel is alleged to have said that the State Department was controlled by Israel.

But over the weekend, the opposition to Hagel appeared to soften, with many senators who voted to block him last week saying that they would allow his confirmation to proceed to a final vote.

Sen. John McCainJohn Sidney McCainTrump's dangerous Guantánamo fixation will fuel fire for terrorists Tech beefs up lobbying amid Russia scrutiny Ad encourages GOP senator to vote 'no' on tax bill MORE (R-Ariz.), one of Hagel’s harshest critics, on Sunday conceded that the nominee was likely to secure enough votes for confirmation. Once the Senate ends debate on Hagel, he would only need a majority of 51 votes to win confirmation.

Shelby is the third Republican to publicly back Obama’s pick to head the Pentagon, joining Sens. Thad CochranWilliam (Thad) Thad CochranTrump asks for another billion in disaster aid Congressional leaders eyeing two-year caps deal up to 0 billion Senate passes resolution requiring mandatory sexual harassment training MORE (Miss.) and Mike JohannsMike JohannsFarmers, tax incentives can ease the pain of a smaller farm bill Lobbying World To buy a Swiss company, ChemChina must pass through Washington MORE (Neb.) who said they would vote to confirm him.

He did not join the four other Senate Republicans: Cochran, Johanns and Sens. Susan CollinsSusan Margaret CollinsStates fill family caregiver void left by Congress GOP senator: ObamaCare fix could be in funding bill Collins: Pass bipartisan ObamaCare bills before mandate repeal MORE (Maine) and Lisa MurkowskiLisa Ann MurkowskiSenate bill would cut EPA funding by 0M GOP senator: ObamaCare fix could be in funding bill Collins: Pass bipartisan ObamaCare bills before mandate repeal MORE (Alaska) who voted for cloture on Hagel's nomination last week.

The White House has also expressed confidence that Hagel will eventually be confirmed, but on Sunday, Obama chief of staff said he had “grave concern” over the delay, which he warned could threaten national security.

Shelby also said he will vote in favor of former White House Chief of Staff Jack LewJacob (Jack) Joseph LewSenator demands answers from DOJ on Russia bribery probe Koskinen's role in the ObamaCare bailout another reason Trump must terminate him The debt limit is the nation's appendix — get rid of it MORE's nomination for secretary of the Treasury.

"I've known him a long time," Shelby said, according to the Alabama newspaper, referring to Lew. "I think he's honest and I think he's capable."