For Slovenians, who became a national minority in Italy, the new border demarcation resulting from the Paris Peace Treaty in 1947 opened a new chapter of political engagement, with the formation of new political parties with clear ideological and national profiles. There were significant differences in the political field among Slovenians who lived in the provinces of Trieste, Gorizia and Udine, stemming from different historical, social as well as national contexts. Ideological differentiation was also prominent in 1947, further “enriched” in 1948 by the dispute between Yugoslavia and the Soviet Union following the Cominform resolution. Ever since the pre-war times, a dividing line had been based on two concepts of political action: independent Slovenian political engagement on the one hand and integration into Italian parties on the other.