There were more than 40 national public polls taken at least partially in the month of May that asked about the Biden-Trump matchup. Biden led in every single one of them. He’s the first challenger to be ahead of the incumbent in every May poll since Jimmy Carter did so in 1976. Carter, of course, won the 1976 election. Biden’s the only challenger to have the advantage in every May poll over an elected incumbent in the polling era.

Biden remains the lone challenger to be up in the average of polls in every single month of the election year. His average lead in a monthly average of polls has never dipped below 4 points and has usually been above it.

Biden hasn’t trailed Trump this entire year in a single telephone poll in which at least some voters were reached via their cell phones — historically the most accurate. The ABC News/Washington Post poll is the latest example of these polls. In fact, Biden’s never been behind in any of these polls since at least January 2019. No other challenger has come close to that mark.

Indeed, the stability of Biden’s edge has been what is most impressive.