Ballot Roll-Off in the 2021 Alberta Senate Nominee Election: Political Identities and Participation Patterns

In 2021, Alberta held Senate nominee elections for the fifth time in the province's history. Conducted concurrently with municipal elections and multiple referenda/plebiscites, the Senate race had a much lower participation rate than any of the other votes held that day. The purpose of this research note is to identify patterns of ballot roll-off—the phenomenon whereby electors cast a ballot for one race but not another—in the Senate election. Using data from a three-wave survey of Calgarians, the note describes the attitudes of electors toward the Senate election, revealing that electors viewed it as less important than any of the other votes contested that day. It also considers the role of partisan and geographic identities in shaping participation rates. Survey data reveal that both types of identities are associated with roll-off in the Senate election but not any of the other votes with which it was held concurrently.