Britain's Parliament will vote on Tuesday on a possible inquiry into Prime Minister Keir Starmer, looking at whether he misled the House of Commons over the appointment of former U.S. Ambassador Peter Mandelson.

Any such inquiry could have serious implications for Starmer's future. He has so far resisted pressure to quit over his decision to hire Mandelson, but if found to have knowingly misled Parliament, ⁠his position would likely become untenable.

House of Commons Speaker Lindsay Hoyle said he had approved a request from opposition Conservative Party leader Kemi Badenoch for Parliament to debate and vote ⁠on whether the Committee of Privileges should look into the matter.

Mandelson was fired by Starmer last September after his relationship with the deceased convicted sex offender Jeffrey Epstein was found to be deeper than previously known.

That has raised doubts about Starmer's judgment in hiring him, exacerbated by the revelation that a security vetting body had described the appointment as a borderline case and that it was leaning against granting clearance — a decision foreign ministry officials overruled without telling the prime minister.

Starmer's center-left Labour Party has a large majority in Parliament, which could allow the government to instruct its lawmakers to vote down the launch of an ⁠inquiry.

A spokesperson from Starmer's office described Badenoch's push for a vote as a "desperate ⁠political stunt" ahead of local elections due on May 7.

Hoyle said his decision to allow the vote should not ⁠be taken as ⁠an indicator of whether Starmer had done anything wrong or not.

If Parliament did vote in favor of an inquiry, the committee, made up of lawmakers from the three biggest parties, would examine whether Starmer's statements on Mandelson amount to knowingly or inadvertently misleading the House of Commons.

The focus of any such inquiry would be expected to fall on Starmer's statement that due process was followed when hiring Mandelson.

The committee previously found that former Conservative Prime Minister Boris Johnson had knowingly misled Parliament over rule-breaking parties held during the COVID-19 pandemic.

Johnson had already stood down as prime minister by the time the report was published, but he resigned from Parliament altogether after seeing a draft copy of the findings.