This research note reports on a new effort to track candidate diversity in Canadian elections. The dataset covers 4,516 candidates who ran in the 2008, 2011, 2015 and 2019 federal elections and includes novel data on their race, Indigenous background and age, alongside information on gender, occupation, prior electoral experience and electoral outcome. We outline the process for collecting and systematizing these data, which relied on genealogical methods and the principle of triangulation. The data can be used to track diversity among electoral candidates over time or merged with other sources to answer district-level questions about representational diversity, electoral dynamics, vote choice and political communications. The method could also be replicated and applied to other levels of government.