During the 2018 local elections, it coordinated with the socially conservative Right Wing of the Republic; in 2019, it joined the Polish Coalition.

Kukiz's primary issue during the election was the replacement of Poland's proportional representation electoral system with single member constituencies,[24][25] which was the subject of a referendum in September 2015.

The movement was particularly popular among young people: Kukiz won 42% among voters aged 18 to 29 in the 2015 presidential election.

However, the ideological differences between the Pro-European PSL and the Eurosceptic Kukiz MPs led to a quick fallout.

In November 2020, a PiS motion was put to a vote on the support for the Polish government in the EU budget negotiations (in which Poland and Hungary used their veto).

In response, the Law and Justice chairman Jarosław Kaczyński made a speech praising the new reformed party.

[32] After Jarosław Gowin's scepticism with the "Polish Deal" proposal (an economic recovery plan for countering the COVID-19 recession in Poland) and media law changes that would inevitably force the American company Discovery, Inc. to sell its TVN Group, Gowin was publicly removed from his position as deputy prime minister, resulting in realignment of the composition of the coalition.