 During World War II he participated as an independent member in the Fatherland Front and entered its leadership.After the coup of 9 September 1944, he became a regent of tsar Simeon II, together with Todor Pavlov and Tsvetko Boboshevski, and he remained such until the fall of monarchy on 18 September 1946.From 1945, Venelin Ganev opposed the increasing influence of the Bulgarian Communist Party and joined the opposition.