Popularity isn't the best way to rank presidents. Here are four polls that asked the question who was the best and worst presidents since WWII. G.W. Bush was ranked second worst behind Obama in the Quinnipiac 2014 poll. But Obama was also the fourth best. 2017 Quinnipiac poll showed Bush sixth best with Obama 2nd best. It also showed Obama the second worst with Bush being the third worst.
In 2017 Morning Consult poll included Trump for the first time. Obama was 2nd best, Trump 5th best, Bush 6th best. Morning Consult had Trump the worst, Obama second worst with Bush fourth worst. Quinnipiac University poll taken in March 2018 had Obama second best, Trump 5th best and Bush 10th best. Quinnipiac 2018 worst, Trump the worst, Obama second worst with 5th worst.
Needless the polls below showed partisanship at it finest or worst. These polls are how the average American Joe viewed the presidents, not historians which is different. Needless to say if you're a Republican Obama is the worst, if you're a Democrat, Trump is the worst with G.W. close behind.
Best and Worst presidents since WWII
2014 Quinnipiac poll
A Quinnipiac University poll taken June 24–30, 2014, asked 1,446 registered voters in the United States who they thought were the best and worst Presidents since World War II.
Best President since World War II:
Ronald Reagan (35%)
Bill Clinton (18%)
John F. Kennedy (15%)
Barack Obama (8%)
Dwight Eisenhower (5%)
Harry S. Truman (4%)
Lyndon B. Johnson (tie) (3%)
George H. W. Bush (tie) (3%)
Jimmy Carter (2%)
Richard Nixon (tie) (1%)
Gerald Ford (tie) (1%)
George W. Bush (tie) (1%)
Worst President since World War II:
Barack Obama (33%)
George W. Bush (28%)
Richard Nixon (13%)
Jimmy Carter (8%)
Lyndon B. Johnson (tie) (3%)
Ronald Reagan (tie) (3%)
Bill Clinton (tie) (3%)
Gerald Ford (tie) (2%)
George H. W. Bush (tie) (2%)
Dwight Eisenhower (1%)
Harry S. Truman (tie) (<1%)
John F. Kennedy (tie) (<1%)
2017 Quinnipiac poll
Four years later, a Quinnipiac University poll taken January 20–25, 2017, asked 1,190 voters in the United States who they thought were the best and worst Presidents since World War II.
Best President since World War II:
Ronald Reagan (30%)
Barack Obama (29%)
John F. Kennedy (12%)
Bill Clinton (9%)
Dwight Eisenhower (tie) (3%)
George W. Bush (tie) (3%)
Harry Truman (tie) (2%)
Lyndon B. Johnson (tie) (2%)
Jimmy Carter (tie) (2%)
George H. W. Bush (tie) (2%)
Richard Nixon (tie) (<1%)
Gerald R. Ford (tie) (<1%)
Worst President since World War II:
Richard Nixon (24%)
Barack Obama (23%)
George W. Bush (22%)
Jimmy Carter (10%)
Ronald Reagan (5%)
Bill Clinton (4%)
Lyndon B. Johnson (3%)
George H. W. Bush (2%)
Gerald R. Ford (1%)
Harry S. Truman (tie) (<1%)
Dwight Eisenhower (tie) (<1%)
John F. Kennedy (tie) (<1%)
2017 Morning Consult poll
Including for the first time President Donald Trump, a Morning Consult poll taken February 9–10, 2017, asked 1,791 registered voters in the United States, who they thought were the best and worst Presidents since World War II.
Best President since World War II:
Ronald Reagan (26%)
Barack Obama (20%)
John F. Kennedy (17%)
Bill Clinton (9%)
Donald Trump (6%)
George W. Bush (tie) (2%)
Harry Truman (tie) (2%)
Jimmy Carter (tie) (2%)
George H. W. Bush (tie) (2%)
Richard Nixon (tie) (1%)
Lyndon B. Johnson (tie) (1%)
Gerald R. Ford (<1%)
Worst President since World War II:
Donald Trump (26%)
Barack Obama (25%)
Richard Nixon (13%)
George W. Bush (7%)
Bill Clinton (6%)
Jimmy Carter (5%)
George H. W. Bush (3%)
Lyndon B. Johnson (2%)
Ronald Reagan (tie) (1%)
Gerald R. Ford (tie) (1%)
Harry S. Truman (tie) (1%)
John F. Kennedy (<1%)
2018 Quinnipiac poll
A Quinnipiac University poll taken March 3–5, 2018, asked 1,122 voters in the United States who they thought were the best and worst Presidents since World War II.
Best President since World War II:
Ronald Reagan (28%)
Barack Obama (24%)
John F. Kennedy (tie) (10%)
Bill Clinton (tie) (10%)
Donald Trump (7%)
Dwight Eisenhower (4%)
Harry Truman (tie) (3%)
Jimmy Carter (tie) (3%)
Lyndon B. Johnson (2%)
George H. W. Bush (tie) (1%)
Richard Nixon (tie) (1%)
George W. Bush (tie) (1%)
Gerald R. Ford (<1%)
Worst President since World War II:
Donald Trump (41%)
Barack Obama (21%)
Richard Nixon (10%)
Jimmy Carter (8%)
George W. Bush (6%)
Bill Clinton (4%)
Lyndon B. Johnson (tie) (2%)
Ronald Reagan (tie) (2%)
Gerald R. Ford (1%)
Harry S. Truman (tie) (<1%)
Dwight Eisenhower (tie) (<1%)
John F. Kennedy (tie) (<1%)
George H. W. Bush (tie) (<1%)
Historical rankings of presidents of the United States - Wikipedia