In December 2017 and January 2018, the Sejm and Senate, thanks to the votes of the deputies of ruling party Law and Justice, passed hugely controversial law amending inter alia Polish Electoral Code. Its adoption was opposed by the parliamentary opposition, by the electoral administration bodies and by many experts, however unsuccessfully. The enactment of this law destabilises the electoral system without a clear or evident need and treats the electoral code as a political instrument. Secondly, it does not provide the sufficient time for adaptation (vacatio legis), which may jeopardise free and fair local elections and the stability of the political system. Thirdly, the bill contains numerous unclear provisions and is in many parts written in a careless and contradictory way. Such amendments do not correspond with the European standards, described in the Venice Commission’s Code of Good Practice in Electoral Matters.