Most of the successive governments supported Pilsudski, who served as Chief of State from 1918 to 1922 and as Prime Minister from 1926 to 1928 and for several months in 1930.
Piłsudski was highly influential, never dropped out of public life, remained active in Polish politics and exercised considerable influence until his death in May 1935.
In May 1926, Piłsudskiite forces conducted the May Coup, deposed the legally-elected government and installed their own.
The Sanacja began to strengthen its own power and to curb the activities of opposition political parties.
The political situation in Poland became radicalised, and the pressure of opposition camps on the ruling Sanacja (especially by the right-wing National Democracy) became stronger.