Former President George W. Bush will not be endorsing a Republican presidential candidate, a new report says.

“While I would never rule anything out, he definitely doesn’t have any plans to make an endorsement,” a Bush aide said, according to Politico.

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“He and Mrs. [Laura] Bush voted early in Texas for Jeb,” the aide added. The former president's brother suspended his campaign late last month.

“Now, like a lot of voters, they are watching to see who can unite the party, represent conservative values and serve as president of all the people.”

George W. Bush emerged from relative seclusion last month, joining Jeb Bush on the campaign trail before South Carolina’s primary.

The former Florida governor still had a disappointing performance in the state, coming in fourth place. He exited the race shortly after.

“I told Jeb how proud I am of him and his staff for running campaign that looked to the future, presented serious policy proposals and elevated the tone of the race,” George W. Bush wrote on the night of his brother’s exit.

Establishment Republicans are searching for a way to stop front-runner Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

GOP 2012 presidential nominee Mitt Romney last week railed against Trump, urging voters to reject him.

“I’ll either vote for a conservative who runs or I’ll write in the name of a conservative,” said Romney.

Romney and others say Trump is not suitably conservative or serious enough to be the GOP's standard-bearer.

Trump has countered that he offers the party its best chance of attracting new voters.