Do incumbents gain from calling a snap election?

In many countries the incumbent party is free to call an early election. This gives them an advantage over opposition parties. But this decision can also backfire. In the present paper, we examine voters' reactions to a snap election held despite a fixed election date, resistance by opposition parties, and a global pandemic. We conduct a survey experiment during the 2021 Canadian federal election campaign to assess whether voters are influenced by information about the fixed election law and the argument that the election call was opportunistic and unnecessary. While some respondents, particularly partisans of the Liberal Party, the incumbent party, moderately respond in a negative way to new information, our treatments overall do little to influence views about the snap election. However, negative attitudes toward the election call are a decisive consideration for many voters, inflicting an electoral cost to the Liberal Party which likely deprived it from a legislative majority.