The poll comes also as Republicans hold a slight partisan edge over Democrats, which shows that 45% of Americans are Republican or lean-Republican, while 42% are Democrat or lean-Democratic, per Gallup.
That's a change from previous years, including in 2022, when an equal number of Americans said they consider themself a Republican or a Democrat.
Democrats held a partisan edge over Republicans in 2020, 2018 and 2016, per the average of Gallup party affiliation polls from those years.