| Country | Peak Members (Millions) | Symbol | Position | Answer | % Correct |
|---|---|---|---|---|---|
| German Reich | 8.5 (1945) | Far-right | Nazi Party | 100%
| |
| Soviet Union | 19 (1986) | Far-left | Communist Party of the Soviet Union | 71%
| |
| Italy | 2.5 (1947) | ![]() | Left-wing | Italian Communist Party | 57%
|
| Kingdom of Italy | 10 (1930) | ![]() | Far-right | National Fascist Party | 57%
|
| Syria | 1.2 (2010) | ![]() | Far-left | Arab Socialist Ba'ath Party – Syria Region | 50%
|
| SFR Yugoslavia | 2.1 (1981) | Left-wing to Far-left | League of Communists of Yugoslavia | 50%
| |
| People's Republic of Bulgaria | 1 (1989) | Far-left | Bulgarian Communist Party | 43%
| |
| Indonesia | 3 (1960) | ![]() | Far-left | Communist Party of Indonesia | 43%
|
| Federal State of Austria | 3 (1937) | Far-right | Fatherland Front | 43%
| |
| People's Socialist Republic of Albania | 1.5 (1989) | ![]() | Far-left | Party of Labour of Albania | 43%
|
| Polish People's Republic | 3.5 (1970s) | Far-left | Polish United Workers' Party | 43%
| |
| Socialist Republic of Romania | 3.7 (1989) | ![]() | Far-left | Romanian Communist Party | 43%
|
| Czechoslovak Socialist Republic | 1.5 (1981) | ![]() | Far-left | Communist Party of Czechoslovakia | 36%
|
| Brazil | 1.13 (1937) | Far-right | Brazilian Integralist Action | 29%
| |
| Russian Empire | 1 (1917) | Left-wing | Socialist Revolutionary Party | 29%
| |
| Dominican Republic | 1.6 (1960) | Far-right | Dominican Party | 21%
| |
| Ethiopia | 6 (2011) | Originally: Far-left Later: Centre-left | Ethiopian People's Revolutionary Democratic Front | 21%
| |
| German Democratic Republic | 2.3 (1989) | ![]() | Far-left | Socialist Unity Party of Germany | 21%
|
| Czechoslovakia | 1.35 (1938) | Far-right | Sudeten German Party | 21%
| |
| German Republic | 5.6 (1924) | Right-wing | Agricultural League | 14%
| |
| Italy | 2 (1990) | Centre | Christian Democracy | 14%
| |
| Iran | 2.5 (1979) | ![]() | Big Tent | Islamic Republican Party | 14%
|
| Protectorate of Bohemia and Moravia | 4 (1939) | ![]() | Far-right | National Partnership | 14%
|
| Kingdom of Romania | 2.12 (1947) | Syncretic | National Peasants' Party | 14%
| |
| Zaïre | 46.5 (1996) | Right-wing | Popular Movement of the Revolution | 14%
| |
| Brazil | 1.19 (2017) | ![]() | Originally: Centre-left Later: Far-right | Brazilian Labour Party | 7%
|
| Brazil | 1.11 (2009) | ![]() | Centre-right | Democrats | 7%
|
| Indonesia | 1.5 (1950) | Left-wing | Indonesian National Party | 7%
| |
| Iran | 3 (1979) | Centre | Muslim People's Republic Party | 7%
| |
| Egypt | 1.9 (2010) | Centre | National Democratic Party | 7%
| |
| Pahlavi Iran | 5 (1976) | Big Tent | Rastakhiz Party | 7%
| |
| Manchukuo | 4 (1943) | Far-right | Concordia Association | 0%
| |
| Empire of Japan | 2.5 (1940) | Centre | Constitutional Democratic Party | 0%
| |
| Tunisia | 2.5 (2010) | ![]() | Centre-left | Democratic Constitutional Rally | 0%
|
| German Empire | 1.25 (1918) | Far-right | German Fatherland Party | 0%
| |
| Rwanda | 7.1 (1990) | Far-right | National Revolutionary Movement for Development | 0%
| |
| Spain | 1.7 (1920s) | ![]() | Right-wing | Patriotic Union | 0%
|
| Italy | 1.15 (2011) | ![]() | Centre-right | The People of Freedom | 0%
|