The electoral reform promoted by Giorgia Meloni has received final approval from the Chamber of Deputies, introducing a proportional system supplemented by a majority bonus and new rules for candidacies, preferences, subscriptions, and voting by citizens temporarily domiciled outside their municipality of residence.

The bonus mechanism assigns 70 seats in the Chamber of Deputies and 35 in the Senate to the list or coalition that receives at least 42% of the vote in each of the two chambers of Parliament. The requirement must be met simultaneously in both the Chamber of Deputies and the Senate; if it is not met in even one of the two elections, the bonus is not applied in either chamber, and the seats are distributed proportionally.

The additional seats are added to those already obtained by the winner in the proportional distribution, up to a limit of 220 deputies and 113 senators. If this threshold is exceeded, the excess is subtracted from the proportional seats of the winning list. Those elected in the Overseas constituency, equal to eight deputies and four senators, are excluded from this calculation.

In multi-member constituencies, each list will include a blocked leader and six other candidates. Voters may indicate up to three preferences by ticking the boxes. To compete for the majority prize, parties must submit lists on a constituency basis; in coalitions, these lists will be common to the entire alliance. The definition of the so-called "big list", which will be formed as a whole if the prize is won, will be determined by agreement between the coalition parties.

The gender rotation among the top candidates provided for by the Rosatellum has been eliminated. The new rules require a rotation of candidates of different genders, including the top candidate. However, they do not guarantee election quotas, as the allocation of seats will depend on the votes received. Considering the total number of candidates on each list, neither gender will be able to exceed 60%.

The thresholds remain unchanged: 10% for coalitions and 3% for individual lists, whether independent or in coalition. The first list from each coalition that receives less than 3% of the vote will be eligible for re-election. Political parties will also be required to include the name and surname of the person proposed for Prime Minister in their electoral manifesto. A coalition must indicate a single shared name, which will not appear on the ballot. Failure to do so will result in the lists being ineligible, as is already the case with failure to submit a manifesto.

The law also addresses the signature requirements for running for office. Parties not represented in Parliament will be required to collect at least 6,000 signatures in each constituency, for an estimated total of approximately 450,000. For parties with a group or component in at least one chamber at the time of the elections, such as Più Europa or Futuro Nazionale with Vannacci, the requirement remains set at 1,500 signatures per constituency. Azione, Avs, and Noi Moderati, which have formed a parliamentary group in at least one of the two chambers by December 31, 2025, will instead benefit from the exemption provided for by the transitional provision, in derogation of the current regulation that limits exemption to parties with groups in both chambers from the beginning of the legislature.

Candidates on the constituency lists submitted for the governability bonus must run as the top candidate in at least one multi-member constituency. Multiple candidacies are permitted, up to a maximum of five constituencies. The structure of the Overseas constituency has also changed: in the Chamber of Deputies, the divisions are reduced from four to two: Europe and the Americas-Asia-Oceania-Antarctica; in the Senate, the four divisions are combined into a single Overseas constituency. Despite the territorial expansion, a minimum of 500 signatures remains required for each division as per the Tremaglia Law. Parties forming a parliamentary group, even in just one Chamber, in the current legislature at the time of the elections are not required to sign, nor are parties that presented their own candidacies in the last election and obtained at least one seat in either Chamber.

Finally, the reform establishes, at each municipal electoral office, a list of non-resident voters eligible to vote in their municipality of temporary residence for the Chamber of Deputies, Senate, European Parliament, and referendums. Students and workers domiciled in a region other than their electoral registration region may submit an application by December 31st, provided they intend to stay for at least nine months in the following year. Those who meet the requirement after that date may apply for registration within thirty days of reaching the nine-month mark, and in any case no later than the forty-fifth day before the vote. A specific procedure applies to people undergoing healthcare, therapy, or medical treatment outside their region for at least three months, including the election date: the application must be submitted no later than the forty-fifth day before the vote. During the Senate review, this option was extended to family caregivers and parents or cohabiting relatives of minors undergoing treatment away from their residence.