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One-party state

A one-party state, single-party state, one-party system or single-party system is a governance structure in which only a single political party controls the ruling system. All other parties are either outlawed or only enjoy limited and controlled participation in elections. Sometimes the term "de facto one-party state" is used to describe a dominant-party system that, unlike the one-party state, allows (at least nominally) democratic multiparty elections, but the existing practices or balance of political power effectively prevent the opposition from winning power.

Membership in the ruling party tends to be relatively small compared to the population. With such a small winning coalition, leaders in one-party states usually lack the incentive to care about the well-being of citizens. Rather, they give out private goods to fellow elites to ensure continued support. One-party, compared to dominant-party dictatorships, structure themselves unlike democracies. They also turn into democracies at a lower rate than dominant-party dictatorships. While one-party states prohibit opposition parties, some allow for elections at the smallest local level. One-party states lack any legitimate competition. Therefore, they place elites and sympathetic candidates in key administrative races. For example, the Chinese Communist Party exercises political control by infiltrating village administrations. They view these positions as crucial for gathering information on the population and maintaining a presence in the far reaches of their borders. One-party states recognize the trade-off between election victory and gathering valuable data. To account for this, the regimes have been observed placing local nobility in easy-to-win races. One-party states have also been observed using elections to ensure that only the most popular elites get chosen to office. They also gather data from elections to indicate if a local official is performing poorly in the eyes of the residents. This gives locals the opportunity to monitor local officials and communicate satisfaction with the local government. Throughout the country, members of the one party hold key political positions. In doing so, the party avoids committing outright fraud and rather sustains their power at the local level with strategic appointment of elites. Data on one-party regimes can be difficult to gather given their lack of transparency.

Current one-party states

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

De facto one-party states

A de facto one-party system is one that, while not officially linking a single political party to governmental power, utilizes some means of political manipulation to ensure only one party stays in power. Many different countries have been claimed to be de facto one-party states, with differing levels of agreement between scholars, although most agree that the African continent is marked by this political system. Below are just a few examples of governments that have been claimed to have single party rule due to political manipulation.