Party politics is all churn: new voters enter the electorate, issues emerge, opinions alter and societies change. Successful party management requires alertness to this vast kaleidoscope of change, a willingness to innovate to meet new demands or conditions, and creativity to achieve compromise, or at least acceptance, among the thousands of active supporters and the millions of potential party voters. Party politics is a constant juggling of a great many balls to keep as many as possible in the air. And no party has been as good a juggler for as long a time as the Liberal Party of Canada.