The article presents statistical data on ‘rookie councillors’ of the provincial assemblies [Pol. sejmiki] of the seventh term (2024–2029). The authors, by means of a statistical analysis of the election results, point to the factors enabling one to win a seat as a regional assembly councillor for the first time. Three groups of councillors were analysed: promoted debutantes, demoted debutantes and debutantes with no political experience. The analysis shows the scale of the phenomenon of debutant councillors and their situation on electoral lists as well as the preferences of the electorate directed towards the group under scrutiny.