Passage: The chairman of the Party Control Committee was a powerful figure in Party politics, and usually held membership in the Politburo. Notable chairmen included Andrei Andreyev, Nikolay Shvernik, Arvid Pelshe, Mikhail Solomentsev and Boris Pugo.

Question: Who were the most important people?
Andrei Andreyev, Nikolay Shvernik, Arvid Pelshe, Mikhail Solomentsev and Boris Pugo