A politburo or political bureau is the executive committee for communist parties. It is present in most former and existing communist states. Under Trotskyism, the Politburo is a bureau of the Central Committee.
The term "politburo" in English comes from the Russian Politbyuro (), itself a contraction of Politicheskoye Byuro ( ?, "Political Bureau"). The Spanish term Politburó is directly loaned from Russian, as is the German Politbüro. Chinese uses a calque (Chinese: ; pinyin: ), from which the Vietnamese (B? Chính tr? ""), and Korean (, Jeongchiguk) terms derive.
The first politburo was created in Russia by the Bolshevik Party in 1917 to provide strong and continuous leadership during the Russian Revolution occurring during the same year. The first Politburo had seven members: Lenin, Zinoviev, Kamenev, Trotsky, Stalin, Sokolnikov, and Bubnov. During the 20th century, nations that had a politburo included the USSR, East Germany, Afghanistan, Czechoslovakia and China, among others. Today, there are five countries that have a politburo system: China, North Korea, Laos, Vietnam, and Cuba.
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In Marxist-Leninist states, the party is seen as the vanguard of the people and from that legitimizes itself to lead the state. Essentially, the party officials in the Politburo informally lead the state.
Officially, the Party Congress elects a Central Committee which, in turn, elects the Politburo and General Secretary in a process termed democratic centralism. The Politburo was theoretically answerable to the Central Committee.
In Trotskyist parties, the Politburo is a bureau of the Central Committee tasked with making day-to-day political decisions, which must later be ratified by the Central Committee. It is appointed by the Central Committee from among its members. The post of General Secretary carries far less weight in this model. See, for example, the Lanka Sama Samaja Party.