The article concentrates on a theory of performative acts as a theoretical frame for analysis of political speeches of four chosen political leaders during parliamentary elections in 2015 in Poland. Ewa Kopacz and Beata Szydło were chosen as leaders of two main political parties competing for voters’ support, whereas Ryszard Petru and Paweł Kukiz were chosen as leaders of new parties aiming at change on Polish political scene. Following such categories as: subjectivity of a leader (postulated role of his/her party within a political system, credibility of a leader and declared values), his/her attitude towards message addressee (especially political rival and voters) and the main characteristics of their discourse (emotions, positive or negative discourse and attitude towards political stability and change), the Author decided to analyse speeches of leaders mentioned above. The results indicate that every politician took a special discoursive strategy in order to persuade voters to vote for his party, which was generally characterised in a summary.