The dramatic election of April 2025 which brought Mark Carney to power has been perceived by many as a potentially important turning point in federal politics. But, as we argue in the recently published third edition of Dynasties and Interludes: Past and Present in Canadian Electoral Politics (Dundurn, 2026), it was also an extension of the Justin Trudeau dynasty, which began with an equally dramatic election victory in 2015. With four consecutive election victories, the Justin Trudeau/Mark Carney dynasty now resembles in its longevity other Liberal dynasties such as those of Pierre Trudeau or Jean Chrétien. But it should also be noted that the Carney victory, before the recent floor crossings and by-elections, was a minority government, as were those of Justin Trudeau in 2019 and 2021. The strategic configuration of Canadian federal politics still makes minority outcomes more likely, despite the 43% of the popular vote achieved by the Carney Liberals in 2025.
History shows us that dynasties that begin with a decisive election victory are often tested in the election following, which for Justin Trudeau happened in 2019. The Carney continuation of the dynasty will likely be similarly tested in 2029. Given the inherent volatility of Canadian electoral politics, it is essential not to put too much emphasis on the interpretation of a single election. The successful dynasties achieved their longevity, not just by the personal appeal of their leaders, but also by their ability to capture a degree of public trust on three core issue areas that are nearly always present in Canadian electoral politics. These three “keys to victory” have been: to be perceived by the public as the leader and party best positioned to address the key economic questions of the time; to successfully manage the social, linguistic and regional divisions of the country; and to enjoy public confidence on the issue of maintaining the essential elements of the modern welfare state – e.g. health care, pensions, unemployment insurance – on which large numbers of Canadians depend.
In this third edition of Dynasties and Interludes, we draw comparisons with six previous dynasties that persisted for substantial periods of time, those of Macdonald, Laurier, King/St Laurent, Pierre Trudeau, Chretien/Martin and Stephen Harper. We examine the ways in which these dynasties sustained themselves, and the reasons they eventually came to an end. We also analyse governments that came to power in the interludes between these dynasties and the reasons that they did not sustain their initial victories. Examples are the governments of John Diefenbaker and Brian Mulroney, which might have established dynasties but failed to do so.
Dramatic election victories do not in themselves reliably forecast future success. Rather, Canadian parties and their leaders must regularly be prepared to reposition their appeals to the electorate in relation to each of the three core issue areas discussed in the book. Only success in that endeavour will establish and maintain a dynasty.