London (AFP) – British Conservative politician Rishi Sunak late Friday reached the minimum threshold to run for party leader, as former prime minister Boris Johnson targeted an audacious comeback. Cabinet member Penny Mordaunt became the first to formally declare her candidacy, after the UK’s ruling party was forced into a second leadership contest following the dramatic resignation of Prime Minister Liz Truss. “Honoured to be the 100th Tory MP to support #Ready4Rishi,” senior backbencher Tobias Ellwood tweeted, as other backers of Sunak also said he had crossed the barrier. Sunak will automat…