Pew study finds Americans aren't 2 parties but 9 distinct groups : NPR
Why Do "Left" And "Right" Mean Liberal And Conservative? - Dictionary.com
US election: How left-wing is the Democratic field? - BBC News
Are We Entering a New Political Era? | The New Yorker
U.S. Conservatives Are Uniquely Inclined Toward Right-Wing Authoritariaanism Compared to Western Peers
Democratic Party (United States) - Wikipedia
Left vs. Right (US) — Information is Beautiful
US election: How left-wing is the Democratic field? - BBC News
Red states and blue states - Wikipedia
Political Polarization and Growing Ideological Consistency | Pew Research Center
Liberals make up plurality of Democratic voters, but growth has slowed | Pew Research Center
Have Democrats become a party of the left?
A new group of left-wing presidents takes over in Latin America | The Economist
US election: How left-wing is the Democratic field? - BBC News
United States presidential election of 1940 | United States government | Britannica
2. Americans are divided by party in the sources they turn to for political news | Pew Research Center
Where Did the Terms 'Left Wing' and 'Right Wing' Come From? - HISTORY
Why do "left" and "right" mean liberal and conservative | 11alive.com
Left vs. Right (US) — Information is Beautiful
Views on political parties across Europe | Pew Research Center
Conservatives Greatly Outnumber Liberals in 19 U.S. States
Which Supreme Court justices voted to overturn Roe v. Wade
