The PER was strongly opposed to the liberal and assimilationist program of Wilhelm Filderman and his Union of Romanian Jews (UER). It managed to undermine the UER's spread into Transylvania and other regions, presenting its own candidates in elections for Parliament during the 1930s, when it also became a vocal opponent of antisemitism. Effectively pushed out of national politics in unfavorable circumstances during the elections of 1933, it formed alliances with the UER, before being ultimately banned in 1938. Its support basis was scattered by territorial changes during World War II, and decimated by the Holocaust.