 Swatantra party was India's single-largest opposition party in Parliament and Masani being its leader in Loksabha, initiated debate on finance bills and forced the Congress government to work rigorously.He also headed the PAC.A collection of his speeches was published as "Congress Misrule and Swatantra Alternative".In 1971 general elections Swatantra party did not perform well and he resigned the position of the party president.