The Lao People's Revolutionary Party (LPRP) is the founding and sole ruling party of the Lao People's Democratic Republic. The party's monopoly on state power is guaranteed by Article 3 of the Constitution of Laos, and it maintains a unitary state with centralised control over the economy and military.

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 democratic multiparty elections, but the existing practices or balance of political power effectively prevent the opposition from winning power.