Presidential job approval ratings from Ike to Obama | Pew Research Center
Obama Leaves Office on High Note, But Public Has Mixed Views of Accomplishments | Pew Research Center
Presidential Polls Over Time - Election Guide 2008 - The New York Times
Comparing Trump and Obama in the final stretches of their first terms | YouGov
Statewide opinion polling for the 2012 United States presidential election - Wikipedia
Obama's Nobel Prize: Public Opinion Context
Poll: Obama hits lowest approval - POLITICO
Donald Trump's Approval Rating Surpasses Obama's, Not Just on Rasmussen Reports
President Trump at 100 days: No honeymoon but no regrets (POLL) - ABC News
Presidential job approval ratings from Ike to Obama | Pew Research Center
Approval of Obama, Both Parties in Congress, Slide Across the Board; Near Majority Would Support Recalling Congress and the President | The Institute of Politics at Harvard University
BBC poll: Rest of world favours Obama - BBC News
Obama Starts 2010 With 50% Approval
Why comparing Trump's approval with that of past presidents doesn't say much about 2020 - The Washington Post
Comparing Trump and Obama in the final stretches of their first terms | YouGov
As Obama Years Draw to Close, President and U.S. Seen Favorably in Europe and Asia | Pew Research Center
Obama's approval rating from his first day to his last, in charts — Quartz
Obama Job Approval - Polls - HuffPost Pollster
Obama's Job Approval Declined Steadily Throughout 2013
Obama Approval on Issues, Favorable Rating Up
What's Behind Obama's Improving Poll Numbers? - WSJ
Chart: Biden Approval Stagnates on Low Level | Statista
BBC poll: Rest of world favours Obama - BBC News
File:Opinion polling for the United States presidential election, 2008, Barack Obama Mitt Romney.png - Wikimedia Commons
Poll: Obama Ends First Year with 50% Approval Rating - CBS News
2014 for Obama, the Economy and Congress | YouGov
Presidential Approval Numbers - FactCheck.org
