| Lombardy 4 | |
| Type: | Chamber of Deputies Electoral |
| Region Label: | Region |
| Region: | Lombardy |
| Electorate: | 1,249,579 (2018)[1] |
| Towns: | Cremona, Lodi, Mantua, Pavia |
| Year: | 2017 |
| Seats: | 17 |
Lombardy 4 is one of the 29 constituencies (it|circoscrizioni) represented in the Chamber of Deputies, the lower house of the Italian parliament.[2] The constituency currently elects 17 deputies. Its boundaries correspond to those of the provinces of Cremona, Lodi, Mantua and Pavia, within the Lombardy region. The electoral system uses a parallel voting system, which act as a mixed system, with 37% of seats allocated using a first-past-the-post electoral system and 61% using a proportional method, with one round of voting.[3]
The constituency was established by the Rosato law on 3 November 2017.