3rd federal electoral district of Sonora
| Sonora's 3rd | |
|---|---|
| Electoral district of the Chamber of Deputies of Mexico | |
3rd district since 2023 | |
| Incumbent | |
| Member | Diana Karina Barreras |
| Party | ▌Labour Party |
| Congress | 66th (2024–2027) |
| District | |
| State | Sonora |
| Head town | Hermosillo |
| Coordinates | 29°05′N 110°15′W / 29.083°N 110.250°W |
| Covers | Municipality of Hermosillo (part) |
| Region | First |
| Precincts | 200 |
| Population | 467,597 |
The 3rd federal electoral district of Sonora (Spanish: Distrito electoral federal 03 de Sonora) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of seven such districts in the state of Sonora.
It elects one deputy to the lower house of Congress for each three-year legislative session by means of the first-past-the-post system. Votes cast in the district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the first region.
The current member for the district, elected in the 2024 general election, is Diana Karina Barreras Samaniego of the Labour Party (PT), the wife of President of the Chamber of Deputies Sergio Gutiérrez Luna (Morena).