The Conservative Party's rules for electing a new leader say that the party's MPs cast votes for candidates in successive rounds, with the candidate getting few

The Conservative Party's rules for electing a new leader say that the party's MPs cast votes for candidates in successive rounds, with the candidate getting fewest votes in each round dropping out, until there are only two left. The party's wider membership (i.e. members of the public who have paid the membership fee) then vote to decide which of those two get the job. Last time, Sunak got the most votes among MPs by some margin, with Truss coming second; but Truss won when the vote was put to the party members (possibly because they were very pro-Boris Johnson, and regarded Sunak as disloyal, seeing as it was his resignation that effectively forced Johnson's). This time, Sunak was the only candidate to get enough nominations to run at all, so he won by default (though the number of nominations he got showed he was again the clear favourite among the party's MPs).