In 1926, the party supported Józef Piłsudski during the May Coup.

Immediately after the May Coup, some leaders of peasant parties hoped that cooperation with the new government was possible.

After Piłsudski's May Coup in 1926 he distanced himself from politics and concentrated on academic research into economics.

Its activity was one of the reasons for Józef Piłsudski's May Coup.

After the 1926 May Coup, he was ordered into retirement.

The 1928 elections were the first elections after Józef Piłsudski's May Coup in 1926.

After the May Coup of 1926, split into three factions.

During the May Coup he was one of Piłsudski's officers.

The May Coup started the 13-year period of sanation - the authoritarian rules of Piłsudski's camp.

The first presidential elections in South Korea since the 1961 May Coup took place on 15 October 1963.