Neither was Sunak calling an election. In order for an election to be called, the Prime Minister has to go to His Majesty The King and request that Parliament be dissolved and an election held. The King could have refused or the decision challenged in the courts. Those with a memory longer than a gnat might recall when Boris Johnson was stopped from proroguing Parliament in the Supreme Court – a case brought by foreign tool Gina Miller, standing for election in Epsom next week.