This fascinating study contains important new information and original insights into a poorly-understood political phenomenon: contests for party leadership. It describes, in far greater detail than has appeared before, the frequently bitter struggles over leadership selection which have plagued the Conservative, Labour, Liberal, Social Democratic, and Liberal Democrat parties. Based on extensive interviewing with former party leaders, and careful analysis of leadership contests in each party, the book concludes that leadership selection rules rarely affect who stands for party leadership or who wins the contests.