Among the five living men who have served as president, Barack Obama has the most favorable image and Joe Biden the least favorable.
Joe Biden's last job approval rating as president is 40%. His 42.2% average for his term is the second lowest in Gallup records.
Americans' 90% retrospective job approval of Kennedy is much higher than that of eight other recent presidents, including Trump's 46%.
Jimmy Carter averaged 45.5% job approval as president, essentially tied with Harry Truman as the second-lowest among post-World War II presidents.
Gallup https://news.gallup.com/poll/116500/presidential-approval-ratings-george-bush.aspx
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