This book provides a new analytical perspective on the strategies, membership and communication management of political parties in Poland. The authors address why some political parties have managed to strengthen and survive while others have failed to do the same. The research was carried out in the years 2016–2018, when Poland started to be seen more and more as a weakening democracy. As an in-depth, empirically grounded single-country study of party structure and communication, the book gives an opportunity to draw broader conclusions about the process of party development in the Central and Eastern Europe region three decades since the beginning of democratic transition.