Legislative election results map. Light Blue denotes provinces with a Christian Democratic plurality, Red denotes those with a Democratic Socialist plurality, Green denotes those with a Lega Nord plurality, Gray and Brown denotes those with a Regionalist plurality.
The other major feature was the sudden rise of the federalistLega Nord, 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.
Lega Nord, which was first launched as an upgrade of Alleanza Nord in December 1989, was officially transformed into a party in February 1991 through the merger of various regional parties, notably including Lega Lombarda and Liga Veneta. These continue to exist as "national sections" of the federal party, which presents itself in regional and local contests as "Lega Lombarda–Lega Nord", "Liga Veneta–Lega Nord", "Lega Nord–Piemont", and so on.
The League exploited resentment against Rome's centralism (with the famous slogan Roma ladrona, which loosely means "Rome big thief") and the Italian government, common in northern Italy as many northerners felt that the government wasted resources collected mostly from northerners' taxes. Cultural influences from bordering countries in the North and resentment against illegal immigrants were also exploited. The party's electoral successes began roughly at a time when public disillusionment with the established political parties was at its height. The Tangentopoli corruption scandals, which invested most of the established parties, were unveiled from 1992 on. However, contrarily to what many pundits observed at the beginning of the 1990s, Lega Nord became a stable political force and it is by far the oldest party among those represented in the Italian Parliament.
Lega Nord's first electoral breakthrough was at the 1990 regional elections, but it was with the 1992 general election that the party emerged as a leading political actor. Having gained 8.7% of the vote, 56 deputies and 26 senators, it became the fourth largest party of the country and within Parliament.