ST. JOHN’S, N.L.—In recent years, a Université de Montreal trailblazer has been publishing sophisticated research about the history of party discipline in Canada. Jean-François Godbout compiles and analyzes complex datasets. His findings have appeared in a number of highly regarded journals to bring attention to the operations of legislatures in multiple countries, particularly the Parliament of Canada. Lately, he has authored a series of striking journal articles about how Canadian MPs vote, culminating in his data-infused new book Lost on Division? Party Unity in the Canadian Parliament (University of Toronto Press, 2020).