It is an alliance of various other groups, including the Oromo People's Democratic Organization, the Amhara National Democratic Movement, and the Tigray Peoples Liberation Front. Together they have 472 of the 527 seats in the Council of People's Representatives.
Before it became the government in 1991, it was a rebel group, battling the military junta known as the Derg.
See also: Politics of Ethiopia, List of political parties in Ethiopia.