This paper examines the relationship of social class, ethnicity, and voting in the city of Winnipeg in the 1945 provincial election. Our data sources were the 1946 census and provincial election returns. The Winnipeg provincial constituency was selected for a number of reasons. In 1945, it corresponded to the city of Winnipeg boundaries, thus permitting the correlation of the 1946 Census of the Prairie Provinces data with the October 1945 voting results. Second, it had both a large number of non-British voters and candidates, which allowed a test for the importance of ethnic voting. Third, Winnipeg had (and has) a large working-class population and pockets of upper-class areas, permitting a test for the importance of class voting. Finally, as a multi-member constituency returning 10 members, a system of proportional representation was employed. With 20 candidates in the running for 10 seats, 15 ballot transfers were necessary before all 10 candidates were declared elected. An examination of these ballot transfers permits a corroborating test for class and ethnic voting.