Unipartidismo

Ang lahat ng iba pang partido ay maaaring ipinagbabawal o tinatangkilik lamang ang limitado at kontroladong paglahok sa halalan. Minsan ang terminong "de facto one-party state" ay ginagamit upang ilarawan ang isang dominant-party system na, hindi katulad ng one-party state, ay nagpapahintulot (kahit nominally) ang demokratikong multiparty na halalan, ngunit ang umiiral na ang mga gawi o balanse ng kapangyarihang pampulitika ay epektibong pumipigil sa oposisyon na manalo ng kapangyarihan.

Bagaman ito ay nauna sa 1714 hanggang 1783 "panahon ng Whig oligarchy" sa Great Britain, ang panuntunan ng Committee of Union and Progress (CUP) sa Imperyong Otomano kasunod ng kudeta noong 1913 ay madalas na itinuturing na unang one-party state.

As of 2024 the following countries are legally constituted as one-party states:

Country	Head of party	Leader title	Party	Ideology	Date of establishment	Duration	Notes
China	Xi Jinping	General Secretary	Padron:CCP flag	Socialism with Chinese characteristics	1 October 1949	74 taon, 209 araw
Cuba	Miguel Díaz-Canel	First Secretary	Communist Party of Cuba	Marxism–Leninism, Castroism, Guevarism, Left-wing nationalism	16 April 1961	63 taon, 11 araw
Eritrea	Isaias Afwerki	Chairperson	People's Front for Democracy and Justice	Eritrean nationalism, Statism	24 May 1993	30 taon, 339 araw
Laos	Thongloun Sisoulith	General Secretary	Lao People's Revolutionary Party	Kaysone Phomvihane Thought	2 December 1975	48 taon, 147 araw
North Korea	Kim Jong-un	General Secretary	Workers' Party of Korea	Kimilsungism–Kimjongilism	9 September 1948	75 taon, 231 araw	Leads the Democratic Front for the Reunification of Korea
Sahrawi Arab Democratic Republic	Brahim Ghali	Secretary General	Polisario Front	Sahrawi nationalism, Social democracy	27 February 1976	48 taon, 60 araw	Non-member state of the United Nations, headquartered in Algeria
Vietnam	Nguyễn Phú Trọng	General Secretary	Communist Party of Vietnam	Ho Chi Minh Thought	2 July 1976	47 taon, 300 araw