Legitimate questions: Public perceptions of the legitimacy of US presidential election outcomes

Numerous polls show most Republicans view the 2020 election as illegitimate, but we know relatively little about legitimacy perceptions among losing candidates’ supporters in past elections. I analyze 76 polls asking about the legitimacy of the 2000, 2016, and 2020 presidential elections. Even before 2020, the losing candidate’s supporters are much less likely to view the outcome as legitimate. Losers are about 60 percentage points less likely to accept the election in 2000, about 40 points less likely in 2016, and about 70 points less likely in 2020. Perceptions of legitimacy are typically higher than confidence in election results, and many voters express doubts about the vote count while still accepting the legitimacy of the result.