The aim of this paper is to examine the influence of radical right-wing ideology in the Third Polish Republic. In the first part of the paper, we defined ideologies and highlighted the most important ideological families that served as the basis for the emergence of new ideologies, including the ideology of the Populist Radical Right. In the second part of the paper, we defined what the Radical Right is and its main features, nativism, authoritarianism and populism. In the third part, we tried to show all three features on the example of PiS from 2001-2005 and from 2015 to the present. Along with nativism, authoritarianism and populism, the key determinants of Polish identity are nation and Catholicism. The nation stands out as the basic determinant of building a national identity, and Catholicism is equated with the identity of Poles, a Pole equals being a Catholic. An indispensable actor in the construction of the national identity of Poles is the Catholic Church and Radio Maria, owned by Father Tadeusz Rydzyk, who created the entire media conglomerate. The Church and the RM shape public opinion and influence election outcomes. We found that the radicalization of Poles has been present since the period of Roman Dmowski, the father of Polish nationalism, and Joseph Piłsudski, who offered different visions for the organization of Poland, but with the same goal, strengthening Polish national identity. We see the radicalization of Polish opinion best through opposition to the Pride Parade, opposition to gender ideology and the introduction of sex education in schools.