In accordance with the Constitution of Italy, the election is held in the form of a secret ballot, with 321 Senators, 630 Deputies, and 58 regional representatives entitled to vote. Each of the 20 regions will have three representatives, except for Aosta Valley which will only have one. The election is held in the Palazzo Montecitorio, home of the Chamber of Deputies, with the capacity of the assembly room expanded for the purpose.