‘I think it’s right that we have these robust discussions, but we must do it respectfully,’ Starmer said

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When the Conservatives launched their election campaign five weeks ago, 20 points behind in the polls and on their fourth prime minister in five years, it was unclear how things could get any worse.

The gambling scandal that has engulfed the party has answered that question. The extraordinary row began when the Guardian revealed on 12 June that Craig Williams, Rishi Sunak’s closest parliamentary aide, was under investigation by the Gambling Commission for betting on a July election three days before one was called.