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  [ es ]
Party	▌ Labour Party
Congress	66th (2024–2027)
District
State	Sonora
Head town	Hermosillo
Coordinates	29°05′N110°15′W / 29.083°N 110.250°W / 29.083; -110.250
Covers	Municipality of Hermosillo (part)
PR region	First
Precincts	200
Population	467,597 (2020 Census)

Sonora under the 2017–2022 districting plan

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. ^[1]

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. ^{[2] [3]}

The current member for the district, elected in the 2024 general election, is Diana Karina Barreras Samaniego  [ es ] of the Labour Party (PT), ^{[4] [5]} the wife of President of the Chamber of Deputies Sergio Gutiérrez Luna (Morena). ^[6]

District territory

Under the 2023 districting plan adopted by the National Electoral Institute (INE), which is to be used for the 2024, 2027 and 2030 federal elections, ^[7] Sonora's 3rd district covers 200 electoral precincts (secciones electorales) across the north-western half of the municipality of Hermosillo, including Tiburón Island. ^{[8] [9]}

The head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the state capital, the city of Hermosillo. The district reported a population of 467,597 in the 2020 Census. ^[1]

Previous districting schemes

Evolution of electoral district numbers

	1974	1978	1996	2005	2017	2023
Sonora	4	7	7	7	7	7
Chamber of Deputies	196	300
Sources: [1] [10] [11] [12]

2017–2022

Between 2017 and 2022, the district covered the north-western half of the municipality of Hermosillo, similar to the 2023 scheme. ^{[12] [13]}

2005–2017

Under the 2005 plan, the district covered a north-western portion of the municipality of Hermosillo, with its head town in the state capital. ^{[14] [15]}

1996–2005

Under the 1996 districting plan, the head town was at Hermosillo and the district covered the northern half of the municipality. ^{[16] [15]}

1978–1996

The districting scheme in force from 1978 to 1996 was the result of the 1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300. Under that plan, Sonora's seat allocation rose from four to seven. ^[10] The 3rd district had its head town at Guaymas and it covered the municipalities of Bácum, Guaymas and Empalme. ^[17]

Deputies returned to Congress

National parties
Current
	PAN
	PRI
	PT
	PVEM
	MC
	Morena
Defunct or local only
	PLM
	PNR
	PRM
	PNM
	PP
	PPS
	PARM
	PFCRN
	Convergencia
	PANAL
	PSD
	PES
	PES
	PRD

Sonora's 3rd district

Election	Deputy	Party	Term	Legislature
1916  [ es ]	Ramón Ross [18] [19]		1916–1917	Constituent Congress of Querétaro
...
1976	José Luis Vargas González		1976–1979	50th Congress
1979	Hugo Romero Ojeda		1979–1982	51st Congress
1982	Hugo Romero Ojeda		1982–1985	52nd Congress
1985	Manlio Fabio Beltrones		1985–1988	53rd Congress
1988	Julián Luzanilla Contreras		1988–1991	54th Congress
1991	Julián Luzanilla Contreras		1991–1994	55th Congress
1994	Heriberto Lizárraga Zatarain		1994–1997	56th Congress
1997	Manuel Cornelio Peñuñuri Noriega		1997–2000	57th Congress
2000	Vicente Pacheco Castañeda [20]		2000–2003	58th Congress
2003	Homero Ríos Murrieta [21]		2003–2006	59th Congress
2006	Luis Serrato Castell [22]		2006–2009	60th Congress
2009	Ernesto de Lucas Hopkins [23]		2009–2012	61st Congress
2012	Alejandra López Noriega [24]		2012–2015	62nd Congress
2015	Javier Antonio Neblina Vega [25]		2015–2018	63rd Congress
2018 [26]	Lorenia Valles Sampedro [27]		2018–2022	64th Congress
2021 [28]	Amairany Peña Escalante  [ es ] [29]		2021–2024	65th Congress
2024 [4]	Diana Karina Barreras Samaniego  [ es ] [5]		2024–2027	66th Congress

Presidential elections

Sonora's 3rd district

Election	District won by	Party or coalition	%
2018 [30]	Andrés Manuel López Obrador	Juntos Haremos Historia	58.8408
2024 [31]	Claudia Sheinbaum Pardo	Sigamos Haciendo Historia	61.9564

References

1. "Memoria de la Distritación Nacional 2021–2023" (PDF). INE. p. 262. Archived from the original (PDF) on 28 May 2024. Retrieved 28 May 2024.
2. "How Mexico Elects Its Leaders – The Rules". Mexico Solidarity Project. 31 January 2024. Retrieved 20 July 2024.
3. "Circunscripciones" (PDF). Ayuda 2021. INE . Retrieved 20 July 2024.
4. "Diputaciones: Sonora. Distrito 3. Hermosillo". Cómputos Distritales 2024. INE . Retrieved 18 July 2024.
5. "Perfil: Dip. Diana Karina Barreras Samaniego, LXVI Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 September 2024.
6. Montes, Rafael (13 June 2025). "Críticas a esposa de Gutiérrez Luna por presunto nepotismo no es violencia de género: TEPJF". Milenio. Retrieved 20 June 2025.
7. De la Rosa, Yared (20 February 2023). "Nueva distritación electoral le quita diputados a la CDMX y le agrega a Nuevo León". Forbes México. Retrieved 29 May 2024.
8. "Acuerdo del Consejo General del Instituto Nacional Electoral por el que se aprueba el proyecto de la demarcación territorial de los trescientos distritos electorales federales uninominales". Diario Oficial de la Federación . 20 February 2023. Retrieved 5 September 2024.
9. "Sonora: Catálogo de municipios y distritos electorales federales". Mapoteca. INE. 16 January 2024. Retrieved 4 July 2024.
10. González Casanova, Pablo (1993). Las Elecciones en México: evolución y perspectivas (3 ed.). Siglo XXI. p. 219. ISBN   9789682313219 . Retrieved 11 July 2024.
11. Baños Martínez, Marco Antonio; Palacios Mora, Celia (2014). "Evolución territorial de los distritos electorales federales uninominales, 1977–2010" [Territorial evolution of the federal uninominal electoral districts, 1977–2010]. Investigaciones Geográficas (84). Mexico City: Instituto de Geografía, UNAM: 92. doi: 10.14350/rig.34063 . Retrieved 26 May 2025.
12. "Acuerdo del Consejo General del Instituto Nacional Electoral por el que se aprueba la demarcación territorial de los 300 distritos electorales federales uninominales" (PDF). Repositorio Documental. INE. 15 March 2017. Retrieved 26 May 2025.
13. "Sonora: Distritacion federal escenario final 2017" (PDF). INE. Archived from the original (PDF) on 5 July 2024. Retrieved 4 July 2024.
14. "Acuerdo del Consejo General del Instituto Federal Electoral por el que se establece la demarcación territorial de los trescientos distritos electorales federales uninominales". Diario Oficial de la Federación . 2 March 2005. Retrieved 26 May 2024.
15. "Condensado estatal de Sonora 1996/2005" (PDF). IFE. Archived from the original (PDF) on 17 August 2016. Retrieved 17 August 2024. The link contains comparative maps of the 2005 and 1996 configurations.
16. "Acuerdo del Consejo General del Instituto Federal Electoral por el que se establece la demarcación territorial de los trescientos distritos electorales federales uninominales". Diario Oficial de la Federacion . 12 August 1996. p. 84. Retrieved 28 May 2025. The link provides a complete list of the municipalities covered.
17. "División del territorio de la República en 300 distritos electorales uninominales para elecciones federales: Sonora". Diario Oficial de la Federación . 29 May 1978. p. 40. Retrieved 19 July 2024.
18. "Lista de diputados al Congreso Constituyente 1916–1917" (PDF). Constitución de 1917. Secretaría de Cultura . Retrieved 5 September 2024.
19. "Ramón Ross". Constitución de 1917. Secretaría de Cultura . Retrieved 5 September 2024.
20. "Perfil: Dip. Vicente Pacheco Castañeda, LVIII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
21. "Perfil: Dip. Homero Ríos Murrieta, LIX Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
22. "Perfil: Dip. Luis Gerardo Serrato Castell, LX Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
23. "Perfil: Dip. Ernesto De Lucas Hopkins, LXI Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
24. "Perfil: Dip. Alejandra López Noriega, LXII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
25. "Perfil: Dip. Javier Antonio Neblina Vega, LXIII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
26. "Diputaciones: Sonora. Distrito 3. Hermosillo". Cómputos Distritales 2018. INE . Retrieved 12 July 2025.
27. "Perfil: Dip. Lorenia Iveth Valles Sampedro, LXIV Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
28. "Diputaciones: Sonora. Distrito 3. Hermosillo". Cómputos Distritales 2021. INE . Retrieved 12 July 2025.
29. "Perfil: Dip. Rosangela Amairany Peña Escalante, LXV Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 5 July 2024.
30. "Presidencia: Sonora. Distrito 3. Hermosillo". Cómputos Distritales 2018. INE . Retrieved 3 July 2025.
31. "Presidencia: Sonora. Distrito 3. Hermosillo". Cómputos Distritales 2024. INE . Retrieved 3 July 2025.