Should we just leave the selection of the party leader to MPs?

From 1922-1980, Labour leaders were elected by MPs in a secret ballot. While there are superficially attractive reasons for the increased trend towards democratising party leadership elections, Richard Johnson questions whether it has really given us better value and proposes that we should reconsider the merits of leaving party leadership selection to Labour MPs. More specifically, he reviews four advantages to the PLP ballot system: constitutional propriety, a better screening process, incumbent accountability, and procedural superiority.