Legislative election results map. Yellow denotes provinces with a Christian Democratic plurality, Red denotes those with a Democratic Socialist plurality, Green denotes those with a League plurality, Gray and Brown denotes those with a Regionalist plurality.
The other major feature was the sudden rise of the federalistNorthern League, which increased its vote from 0.5% of the preceding elections to more than 8%, increasing from a single member both in the Chamber and the Senate to 55 and 25, respectively. The onda lunga ("long wave") of Bettino Craxi's now centrist-oriented Italian Socialist Party, which in the past elections had been forecast next to overcome PCI, seemed to stop. Christian Democracy and the other traditional government parties, with the exception of the Republicans and the Liberals, also experienced a slight decrease in their vote.
For the Senate, 237 single-seat constituencies were established, even if the assembly had risen to 315 members. The candidates needed a landslide victory of two thirds of votes to be elected, a goal which could be reached only by the German minorities in South Tirol. All remained votes and seats were grouped in party lists and regional constituencies, where a D'Hondt method was used: inside the lists, candidates with the best percentages were elected.