Johnson previously enjoyed high levels of popularity until losing credibility in the final months of his premiership. Gleb Garanich | ReutersLONDON — Former U.K. Prime Minister Boris Johnson will not take part in the contest to replace outgoing leader Liz Truss. Johnson is believed to still be popular in the grassroots of the wider Conservative Party despite many Tory MPs being firmly against a return. "There is a very good chance that I would be successful in the election with Conservative Party members — and that I could indeed be back in Downing Street on Friday. How the contest worksTruss' successor will once again be decided by a Conservative Party leadership contest drawn from a short-list of candidates.

---