Election results were quite stable for four decades. In the 1970 regional election, the first after the establishment of Veneto as a Region, DC was by far the largest party with 51.8%. As usual, its strongholds included the provinces of Vicenza (64.2%), Padua (56.3%) and Treviso (56.0%). Up to that time the PCI had passed the PSI as second largest party: in 1970 the former garnered 16.8%, the second 10.4% and the PSDI 7.6%. Rovigo was the most left-wing province (the sum of PCI and PSI was 42.3%), followed by Venice (39.2%), and Belluno the most Socialist one (the sum of PSDI and PSI was 27.9%), followed by Treviso (20.6%).