IntroductionThe 2020 US Presidential Election captivated the US public resulting in record turnout. In the months preceding the elections COVID-19, racial injustice and the economic downturn had a daily impact on the lives of voters. In this research, we analyze the sleep behavior of Americans in the lead up to the Presidential Elections. We examine specifically the nights of the Presidential and Vice-Presidential Debates and Election Night.MethodsWe examined sleep data from the PSG-validated SleepScore Mobile Application, which uses a non-contact sonar-based method to objectively capture sleep-related metrics and self-reported lifestyle data. The data set included 123,723 nights (5,967 users residing in the US, aged 18-85, mean age: 46.6 +/- 16.7 years, 52.3% female). Data from September 1st until November 3rd were included. This covered the nights of the Presidential Debates (Tuesday 09/29/2020 and Thursday 10/22/2020) and the Vice-Presidential Debate (Wednesday 10/07/2020). Election night was Tuesday, November 3, 2020. Self-reported stress level (0-24 scale) and alcohol consumption (0-9 drinks) were measured using digital slider scales. Mixed Effect Modelling was used for analysis.ResultsThe night of the 1st Presidential debate saw a change in sleep-related behavior with users going to bed 9.5 minutes later, as compared to a regular Tuesday Night. This resulted in a decrease in both TST (11.5 mins, p<0.001) and TIB (11.8 mins, p<0.001). Interestingly, neither the the 2nd Presidential Debate, nor the Vice Presidential Debate resulted in significant differences in sleep behavior. On election night users went to bed 14.5 (p<0.001) min later on average, as compared to a normal Tuesday Night. This resulted in a decrease in both TIB (24.3 mins, p<0.001) and TST (19.2 mins, p<0.001). Self-report data showed a 13.3% (p<0.001) increase in stress level on election night and 34.4% (p<0.001) increase alcohol consumption Importantly, election night was two nights after the end of Daylight Savings Time (DST), Sunday, November 1st.ConclusionThis analysis shows the 2020 US Presidential election negatively impacted US population sleep. The impact was most pronounced on election night, but also observed following the first Presidential debate. The effect of DST on these findings is unknown but surmised to be meaningful.Support (if any):