It makes sense (to me) to average inflation over the four year electoral period. The average inflation over the Biden years 2021-2024 was 5.3%, versus 1.9% over the Trump years 2017-2020 [1]. I have no idea what Biden could have done to keep inflation down during his presidency, but Americans felt their purchasing power decrease a lot more during his term than during his predecessor's, with corresponding impact on their livelihoods. They have every right to be pissed off. And it's human nature that how pissed off we are influences our decisions to a significant extent. Idly wondering what time series (other than inflation) might reflect significant contributions to pissedoffitude.
[1] https://www.usinflationcalculator.com/inflation/current-infl...