Biden's in one of the best positions for any challenger since scientific polling began

(CNN)A new ABC News/Washington Post poll shows former Vice President Joe Biden clearly ahead of President Donald Trump. Biden's up by a 53% to 43% margin among registered voters in this survey.

But it's important to put individual polls into context, and that context continues to show Biden's in one of the best positions for any challenger since scientific polling began in the 1930s.

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.

https://www.cnn.com/2020/05/31/politics/biden-maintains-strong-position/index.html