 Quite early on, the Nazi Party (NSDAP) gained a strong foothold in Sankt Julian, winning 29.8% of the vote locally in May 1924 Reichstag election (today, the Social Democratic Party of Germany is said to be the village’s strongest political party).By 1938, after the Third Reich had existed for five years and war was coming, the "Heeresstraße" (literally "Army Road") was built.Since the Second World War ended, Sankt Julian has been part of the then newly founded state of Rhineland-Palatinate.