# Lazio 1 (Chamber of Deputies constituency)

Lazio 1 is one of the 29 constituencies (Italian: circoscrizioni) represented in the Chamber of Deputies, the lower house of the Italian parliament. The constituency currently elects 39 deputies. Its boundaries correspond to those of the Metropolitan City of Rome, within the Lazio 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.
The constituency was first established by the Mattarella law on 4 August 1993 and later confirmed by the Calderoli law on 21 December 2005 and by the Rosato law on 3 November 2017.

## Members of the Parliament
### 2018–present

Single-member districts :
| District | District | District | Electoral list | Electoral list | Deputy | Parliamentary group | Parliamentary group | Parliamentary group | Parliamentary group |
| N. | Name | Map | Electoral list | Electoral list | Deputy | At election | At election | Current | Current | Ref. |
| 01 | Rome–Trionfale | | | Centre-left coalition | Paolo Gentiloni (until 2 December 2019) | | Democratic Party | Democratic Party | Democratic Party |
| 01 | Rome–Trionfale | | | Centre-left coalition | Roberto Gualtieri (4 March 2020 – 4 November 2021) | | Democratic Party | Democratic Party | Democratic Party |
| 01 | Rome–Trionfale | | | Centre-left coalition | Cecilia D'Elia (from 19 January 2022) | | Democratic Party | Democratic Party | Democratic Party |
| 02 | Rome–Montesacro | | | Centre-left coalition | Marianna Madia | | Democratic Party | Democratic Party | Democratic Party |
| 03 | Rome–Castel Giubileo | | | Centre-right coalition | Annagrazia Calabria | | Forza Italia | Forza Italia | Forza Italia |
| 04 | Rome–Collatino | | | Five Star Movement | Massimiliano De Toma | | Five Star Movement | | Brothers of Italy |
| 05 | Rome–Torre Angela | | | Five Star Movement | Lorenzo Fioramonti | | Five Star Movement | | Green Italia |
| 06 | Rome–Tuscolano | | | Five Star Movement | Felice Mariani | | Five Star Movement | | League |
| 07 | Rome–Pomezia | | | Five Star Movement | Marco Bella | | Five Star Movement | Five Star Movement | Five Star Movement |
| 08 | Rome–Ardeatino | | | Centre-left coalition | Patrizia Prestipino | | Democratic Party | Democratic Party | Democratic Party |
| 09 | Rome–Fiumicino | | | Five Star Movement | Emilio Carelli | | Five Star Movement | | Together for the Future |
| 10 | Rome–Gianicolense | | | Centre-left coalition | Riccardo Magi | | More Europe | More Europe | More Europe |
| 11 | Rome–Primavalle | | | Five Star Movement | Emanuela Del Re (until 30 June 2021) | | Five Star Movement | Five Star Movement | Five Star Movement |
| 11 | Rome–Primavalle | | | Centre-left coalition | Andrea Casu (since 8 October 2021) | | Democratic Party | Democratic Party | Democratic Party |
| 12 | Guidonia Montecelio | | | Five Star Movement | Sebastiano Cubeddu | | Five Star Movement | Five Star Movement | Five Star Movement |
| 13 | Velletri | | | Centre-right coalition | Marco Silvestroni | | Brothers of Italy | Brothers of Italy | Brothers of Italy |
| 14 | Marino | | | Centre-right coalition | Maria Spena | | Forza Italia | Forza Italia | Forza Italia |
Multi-member districts :
| District | District | District | Party | Party | Deputy |
| N. | Name | Map | Party | Party | Deputy |
| 01 | Lazio 1 – 01 | | | Five Star Movement | Carla Ruocco |
| 01 | Lazio 1 – 01 | | | Five Star Movement | Massimiliano Enrico Baroni |
| 01 | Lazio 1 – 01 | | | Five Star Movement | Vittoria Baldino |
| 01 | Lazio 1 – 01 | | | Democratic Party | Luciano Nobili |
| 01 | Lazio 1 – 01 | | | Democratic Party | Flavia Piccoli Nardelli |
| 01 | Lazio 1 – 01 | | | League | Giuseppe Basini |
| 01 | Lazio 1 – 01 | | | Forza Italia | Andrea Ruggieri |
| 01 | Lazio 1 – 01 | | | Brothers of Italy | Federico Mollicone |
| 02 | Lazio 1 – 02 | | | Five Star Movement | Federico Daga |
| 02 | Lazio 1 – 02 | | | Five Star Movement | Manuel Tuzi |
| 02 | Lazio 1 – 02 | | | Five Star Movement | Angela Salafia |
| 02 | Lazio 1 – 02 | | | Democratic Party | Matteo Orfini |
| 02 | Lazio 1 – 02 | | | Democratic Party | Michele Anzaldi |
| 02 | Lazio 1 – 02 | | | League | Barbara Saltamartini |
| 02 | Lazio 1 – 02 | | | Forza Italia | Antonio Angelucci |
| 02 | Lazio 1 – 02 | | | Brothers of Italy | Maria Teresa Bellucci |
| 02 | Lazio 1 – 02 | | | Free and Equal | Stefano Fassina |
| 03 | Lazio 1 – 03 | | | Five Star Movement | Stefano Vignaroli |
| 03 | Lazio 1 – 03 | | | Five Star Movement | Francesca Flati |
| 03 | Lazio 1 – 03 | | | Five Star Movement | Francesco Silvestri |
| 03 | Lazio 1 – 03 | | | Democratic Party | Roberto Morassut |
| 03 | Lazio 1 – 03 | | | Democratic Party | Micaela Campana |
| 03 | Lazio 1 – 03 | | | League | Sara De Angelis |
| 03 | Lazio 1 – 03 | | | Forza Italia | Sestino Giacomoni |
| 03 | Lazio 1 – 03 | | | Brothers of Italy | Fabio Rampelli |