Éric Ciotti, the leader of France’s mainstream rightwing party, Les Républicains, has vowed he will stay in his job despite key members of his party voting unanimously to oust him over his proposed alliance with the far right. Ciotti was holed up in his office on Wednesday after locking members out of his party’s Paris headquarters amid a mass revolt over his call for an alliance with Marine Le Pen’s far-right National Rally. The extraordinary scenes outside the locked offices echoed the disarray that has gripped French politics since Emmanuel Macron called a snap election on Sunday to try to...