The winning coalition receives a jackpot of at least 45 seats, which are divided between all majority parties using the D'Hondt method, as it happens between the losing lists.

On 16 October 2012, Formigoni announced the dissolution of the regional legislature after one of his commissioners, Domenico Zambetti of the PdL was arrested on accusations he bought votes from the 'Ndrangheta in 2010 and extorted favours and public building contracts, including construction tenders for the World Expo 2015 in Milan.

There were three candidates: Umberto Ambrosoli, son of Giorgio killed in 1979, Alessandra Kustermann and Andrea Di Stefano.

Umberto Ambrosoli received the 57% of the votes and became the center-left official candidate for the regional election.

[4] According to the final results, Roberto Maroni was the new President of Lombardy with more than 40% of the votes, obtaining the greater bonus given by the electoral law.