3rd federal electoral district of Tamaulipas

Tamaulipas's 3rd
Electoral district of the Chamber of Deputies of Mexico
3rd district since 2023
Incumbent
Member	Casandra de los Santos
Party	▌ Ecologist Green Party
Congress	66th (2024–2027)
District
State	Tamaulipas
Head town	Río Bravo
Coordinates	25°59′N98°05′W / 25.983°N 98.083°W / 25.983; -98.083
Covers	15 municipalities Abasolo, Burgos, Cruillas, Jiménez, Mainero, Matamoros (part), Méndez, Padilla, Río Bravo, San Carlos, San Fernando, San Nicolás, Soto la Marina, Valle Hermoso, Villagrán
PR region	Second
Precincts	211
Population	426,145 (2020 Census)

Tamaulipas's districts in 2017–2022

The 3rd federal electoral district of Tamaulipas (Spanish : Distrito electoral federal 03 de Tamaulipas) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of eight such districts in the state of Tamaulipas. ^[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 second region. ^{[2] [3]}

The current member for the district, elected in the 2024 general election, is Casandra Prisilla de los Santos Flores. ^{[4] [5]} Originally elected for the National Regeneration Movement (Morena), she switched to the Ecologist Green Party of Mexico (PVEM) at the start of the congressional session. ^[6]

District territory

Tamaulipas lost a district in 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] The reconfigured 3rd district covers 211 electoral precincts (secciones electorales) across 15 of the state's 43 municipalities: ^{[8] [9]}

• Abasolo, Burgos, Cruillas, Jiménez, Mainero, Méndez, Padilla, Río Bravo, San Carlos, San Fernando, San Nicolás, Soto la Marina, Valle Hermoso and Villagrán, plus the portion of Matamoros not covered by the 4th district.

The head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Río Bravo. The district reported a population of 426,145 in the 2020 Census. ^[1]

Previous districting schemes

Evolution of electoral district numbers

	1974	1978	1996	2005	2017	2023
Tamaulipas	6	9	8	8	9	8
Chamber of Deputies	196	300
Sources: [1] [10] [11] [12]

2017–2022

Between 2017 and 2022, Tamaulipas accounted for nine single-member congressional seats. The 3rd district's head town was at Río Bravo and it covered seven municipalities: ^{[13] [12]}

• Burgos, Cruillas, Matamoros (part), Méndez, Río Bravo, San Fernando and Valle Hermoso.

2005–2017

Under the 2005 plan, Tamaulipas had eight districts. This district's head town was at Río Bravo and it covered: ^{[14] [15]}

• The municipalities of Burgos, Cruillas, Gustavo Díaz Ordaz, Méndez, Río Bravo, San Fernando and Valle Hermoso in their entirety, plus the southern portions of Matamoros and Reynosa.

1996–2005

In the 1996 scheme, under which Tamaulipas lost a single-member seat, the district had its head town at San Fernando and it comprised 12 municipalities: ^{[16] [15]}

• Abasolo, Burgos, Cruillas, Jiménez, Méndez, Padilla, Río Bravo, San Carlos, San Fernando, San Nicolás, Soto la Marina and Valle Hermoso.

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, Tamaulipas's seat allocation rose from six to nine. ^[10] The 3rd district's head town was at Matamoros and it covered that city and its surrounding municipality. ^[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

Tamaulipas's 3rd district

Election	Deputy	Party	Term	Legislature
1916  [ es ]	Emiliano P. Nafarrate  [ es ] [18] [19]		1916–1917	Constituent Congress of Querétaro
...
1924	Emilio Portes Gil [20]		1924–1926	31st Congress
...
1976	Agapito González Cavazos [21]		1976–1979	50th Congress
1979	Miguel Treviño Emparán [22]		1979–1982	51st Congress
1982	Heriberto Batres García [23]		1982–1985	52nd Congress
1985	Jorge Cárdenas González  [ es ] [24]		1985–1988	53rd Congress
1988	Miguel Treviño Emparán [25]		1988–1991	54th Congress
1991	Tomás Yarrington Ruvalcaba [26]		1991–1994	55th Congress
1994	Homar Zamorano Ayala [27]		1994–1997	56th Congress
1997	Rosalinda Banda Gómez [28]		1997–2000	57th Congress
2000	Librado Treviño Gutiérrez [29]		2000–2003	58th Congress
2003	Jesús Humberto Martínez de la Cruz [30]		2003–2006	59th Congress
2006	Omeheira López Reyna [31]		2006–2009	60th Congress
2009	Edgardo Melhem Salinas [32]		2009–2012	61st Congress
2012	José Alejandro Llanas Alba [33]		2012–2015	62nd Congress
2015	Edgardo Melhem Salinas [34]		2015–2018	63rd Congress
2018 [35]	Héctor Joel Villegas González [36]		2018–2021	64th Congress
2021 [37]	Tomás Gloria Requena [38]		2021–2024	65th Congress
2024 [4]	Casandra Prisilla de los Santos Flores [5] [a]		2024–2027	66th Congress

Presidential elections

Tamaulipas's 3rd district

Election	District won by	Party or coalition	%
2018 [39]	Andrés Manuel López Obrador	Juntos Haremos Historia	46.4739
2024 [40]	Claudia Sheinbaum Pardo	Sigamos Haciendo Historia	61.6378

Notes

1. De los Santos Flores was originally elected for Morena but switched to the PVEM at the start of the congressional session. ^[6]

References

1. "Memoria de la Distritación Nacional 2021–2023" (PDF). INE. p. 266. Archived from the original (PDF) on 28 May 2024. Retrieved 19 July 2025.
2. "How Mexico Elects Its Leaders – The Rules". Mexico Solidarity Project. 31 January 2024. Retrieved 19 July 2025.
3. "Circunscripciones" (PDF). Ayuda 2021. INE . Retrieved 19 July 2025.
4. "Diputaciones: Tamaulipas. Distrito 3. Rio Bravo". Cómputos Distritales 2024. INE . Retrieved 19 July 2025.
5. "Perfil: Dip. Casandra Prisilla de los Santos Flores, LXVI Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 19 July 2025.
6. "Arranca apenas la Legislatura y cinco diputados federales piden licencia". MVS Noticias. 2 September 2024. Retrieved 19 July 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 19 July 2025.
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. p. 560. Retrieved 19 July 2025.
9. Escamilla, Josué (2 August 2023). "Tamaulipas traspasa distrito electoral federal a Nuevo León". Hoy Tamaulipas. Retrieved 19 July 2025.
10. González Casanova, Pablo (1993). Las Elecciones en México: evolución y perspectivas (3 ed.). Siglo XXI. p. 219. ISBN   9789682313219 . Retrieved 20 July 2025.
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 20 July 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 20 July 2025.
13. "Descriptivo de la distritación federal: Tamaulipas, marzo de 2017" (PDF). INE. March 2017. Archived from the original (PDF) on 15 January 2019. Retrieved 20 July 2025.
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 20 July 2025.
15. "Condensado estatal de Tamaulipas 1996–2005" (PDF). IFE. Archived from the original (PDF) on 19 May 2006. Retrieved 20 July 2025. The link contains maps of the 2005 and 1996 schemes.
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. 90. Retrieved 20 July 2025.
17. "División del territorio de la República en 300 distritos electorales uninominales para elecciones federales: Tamaulipas". Diario Oficial de la Federación . 29 May 1978. p. 38. Retrieved 20 July 2025.
18. "Lista de diputados al Congreso Constituyente 1916–1917" (PDF). Constitución de 1917. Secretaría de Cultura . Retrieved 19 July 2025.
19. "Emiliano P. Nafarrate". Constitución de 1917. Secretaría de Cultura . Retrieved 19 July 2025.
20. "Legislatura 31" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
21. "Legislatura 50" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
22. "Legislatura 51" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
23. "Legislatura 52" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
24. "Legislatura 53" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
25. "Legislatura 54" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
26. "Legislatura 55" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
27. "Legislatura 56" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
28. "Legislatura 57" (PDF). Biblioteca Virtual. Cámara de Diputados . Retrieved 20 July 2025.
29. "Perfil: Dip. Librado Treviño Gutiérrez, LVIII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
30. "Perfil: Dip. Jesús Humberto Martínez de la Cruz, LIX Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
31. "Perfil: Dip. Omeheira López Reyna, LX Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
32. "Perfil: Dip. Edgardo Melhem Salinas, LXI Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
33. "Perfil: Dip. José Alejandro Llanas Alba, LXII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
34. "Perfil: Dip. Edgardo Melhem Salinas, LXIII Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
35. "Diputaciones: Tamaulipas. Distrito 3. Rio Bravo". Cómputos Distritales 2018. INE . Retrieved 20 July 2025.
36. "Perfil: Dip. Héctor Joel Villegas González, LXIV Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
37. "Diputaciones: Tamaulipas. Distrito 3. Rio Bravo". Cómputos Distritales 2021. INE . Retrieved 20 July 2025.
38. "Perfil: Dip. Tomás Gloria Requena, LXV Legislatura". Sistema de Información Legislativa (SIL). SEGOB . Retrieved 20 July 2025.
39. "Presidencia: Tamaulipas. Distrito 3. Rio Bravo". Cómputos Distritales 2018. INE . Retrieved 19 July 2025.
40. "Presidencia: Tamaulipas. Distrito 3. Rio Bravo". Cómputos Distritales 2024. INE . Retrieved 19 July 2025.