The party gained considerable electoral success during the following years and occasionally supplied external support to centre-left governments, although it never directly joined a government. It successfully lobbied Fiat to set up the AvtoVAZ (Lada) car factory in the Soviet Union (1966). The party did best in Emilia-Romagna, Tuscany and Umbria, where it regularly won the local administrative elections; and in some of the industrialized cities of Northern Italy. At the city government level during the course of the post-war period, the PCI demonstrated (in cities like Bologna and Florence) their capacity for uncorrupt, efficient and clean government. After the elections of 1975, the PCI was the strongest force in nearly all of the municipal councils of the great cities.