The Socialist Alliance party the Leninist-Marxist party of the Democratic Republic was the ruling Marxist-Leninist Party in the country in 1949 until the 1990 elections. The party was formed in 1946 under the influence of the Soviet Union. In fact, the members of the Social Democratic party the people's party and the Communist Party who lived in the Soviet-occupied region of Berlin and the Soviet-occupied part of Berlin merged and founded the party.

in 1990, the party's name to "the party of socialism Democratic Change Alliance, and later in the year 2005 the name of the "Left party" chose today, the party left significant force in Germany, especially in the area of East Germany, the former, etc. is accounted.