Labour leader Keir Starmer aimed a cheeky dig at the Conservatives with a piercing jibe about betting.
Mr Starmer made the pointed remark while being interviewed by GB News' Christopher Hope on Friday evening.
Mr Hope tried to get Mr Starmer to commit to bringing the number of illegal crossings down by trying to get him to shake on a low-stakes bet.
The GB News presenter said: "Will you bet a pint of beer you'll get a boat crossing numbers down?"
Starmer cheekily shot back: "Betting in politics is not a very good idea. I think Rishi Sunak is in all sorts of trouble with bets on his side."
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It comes as the Conservative campaign continues its downward spiral after Rishi Sunak refused to rule out whether members of his Cabinet placed bets on when the General Election date would be.
Gambling Commission officials have launched an investigation into three senior Tories after a flurry of bets were placed on when the election would take place.
An unusually high spike in the number of bets took place on the day before Mr Sunak announced the election, putting a sharp focus on who knew it would happen and when.
Mr Sunak was told to "come clean" about the number of people who were involved. The Conservative Party has admitted it was aware of "a small number" of people who were being probed, but it stopped short of saying how many.
Top Tory David TC Davies was grilled over whether more Conservatives would emerge in connection with the scandal.
The Welsh Secretary went as far as denying he'd placed any bets.
During a Question Time special yesterday, Mr Sunak said he was "incredibly angry" about the allegations that Tory members close to him were embroiled in the scandal but ultimately refused to suspend candidates.
Tory Candidates, Laura Saunders and Mr Sunak's aide Craig Williams as well as Ms Saunders' husband Tony Lee are among those who are being investigated.
Mr Lee quit as the party's campaigning chief after it emerged he was also under investigation.
Labour leader Keir Starmer said Mr Sunak was showing "a total lack of leadership" after he bungled the handling of the betting scandal.
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Mr Starmer told broadcasters during a campaign visit to Scotland: "The Prime Minister is showing a total lack of leadership. Let's look at what actually happened.
"In relation to a General Election, the instincts of these Tories when a General Election is called is not how do we make this work for the country? But how do I make some money? And that tells you a broader picture about politics.
"Of course he should suspend these candidates. If they were my candidates, they'd be gone by now, out of the door. He needs to take tough action. He's not even saying today whether there are more involved."
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