It’s the week of the local elections and the most pivotal of Rishi Sunak’s premiership to date. It’s been clear for some time now that the Prime Minister’s critics will attempt to rally MPs to turn on Sunak if the party faces a drubbing in Thursday’s vote. This is more than the odd unhappy MP: a group of ragtag plotters – including one-time donors and former government advisers – is agitating from outside parliament to destabilise Sunak.