4th federal electoral district of Coahuila

The 4th federal electoral district of Coahuila (Spanish: Distrito electoral federal 04 de Coahuila) 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 Coahuila.^[1]

Coahuila's 4th
Electoral district of the Chamber of Deputies of Mexico
4th district since 2022
Incumbent
Member	Jericó Abramo Masso
Party	▌Institutional Revolutionary Party
Congress	66th (2024–2027)
District
State	Coahuila
Head town	Saltillo
Coordinates	25°25′N 100°59′W
Covers	Municipality of Saltillo (part)
PR region	Second
Precincts	187
Population	443,238 (2020 Census)

Coahuila under the 2017–2022 districting plan

It elects one deputy to the lower house of Congress for each three-year legislative session using 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, re-elected in the 2024 general election, is Jericó Abramo Masso of the Institutional Revolutionary Party (PRI).^[4][5]

District territory

In its 2023 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, the National Electoral Institute (INE) assigned Coahuila an additional district.^[6] The reconfigured 4th district covers 187 electoral precincts (secciones electorales) in the north-eastern, urban portion of the municipality of Saltillo.^[7][8][a]

The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the state capital, the city of Saltillo. The district reported a population of 443,238 in the 2020 Census.^[1]

Previous districting schemes

Evolution of electoral district numbers

	1974	1978	1996	2005	2017	2023
Coahuila	4	7	7	7	7	8
Chamber of Deputies	196	300
Sources: [1][9][10][11]

2017–2022

Between 2017 and 2022, the district covered a part of the municipality of Saltillo and the whole of the neighbouring municipality of Arteaga. The head town was at Saltillo.^[11][12]

2005–2017

Between 2005 and 2017, the district covered the eastern portion of the municipality of Saltillo, with the city of Saltillo serving as the head town.^[13][14]

1996–2005

Under the 1996 scheme, the district covered the north-eastern portion of the city of Saltillo – the head town – together with the municipalities of Arteaga, General Cepeda, Parras and Ramos Arizpe.^[15][14]

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, Coahuila's seat allocation rose from 4 to 7.^[9] Located in the north of the state, the 4th district had its head town at Piedras Negras and it covered the municipalities of Acuña, Jiménez, Morelos, Nava, Piedras Negras, Sabinas and Zaragoza.^[16]

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

Coahuila's 4th district

Election	Deputy	Party	Term	Legislature
1916 [es]	Jorge Von Versen[17][18]		1916–1917	Constituent Congress of Querétaro
1917	Aureliano Esquivel Casas	PLC	1917–1918	27th Congress
1918	Jesús Rodríguez de La Fuente		1918–1920	28th Congress
1920	Manuel H. Flores		1920–1922	29th Congress
1922 [es]	Enrique Breceda		1922–1924	30th Congress
1924	Elpidio Rodríguez		1924–1926	31st Congress
1926	Elpidio Barrera		1926–1928	32nd Congress
1928	Alfredo I. Moreno		1928–1930	33rd Congress
1930	Raymundo Cervera		1930–1932	34th Congress
1932	Severo Jiménez Cadena		1932–1934	35th Congress
1934	Carlos Garza Castro [es]		1934–1937	36th Congress
1937	Emilio N. Acosta		1937–1940	37th Congress
1940	Carlos Samaniego G.		1940–1943	38th Congress
1943	Secundino Ramos y Ramos		1943–1946	39th Congress
1946	Federico Meza Zúñiga		1946–1949	40th Congress
1949	Ramón Quintana Espinoza		1949–1952	41st Congress
1952	Feliciano Morales Ramos		1952–1955	42nd Congress
1955	Antonio Hernández Méndez		1955–1958	43rd Congress
1958	Daniel Hernández Medrano		1958–1961	44th Congress
1961	Esteban Guzmán Vázquez		1961–1964	45th Congress
1964	Mauro Berrueto Ramón		1964–1967	46th Congress
1967	Feliciano Morales Ramos		1967–1970	47th Congress
1970	Salvador Hernández Vela		1970–1973	48th Congress
1973	J. Jesús López González		1973–1976	49th Congress
1976	Julián Muñoz Uresti		1976–1979	50th Congress
1979	Ángel López Padilla		1979–1982	51st Congress
1982	Lucio Lozano Ramírez		1982–1985	52nd Congress
1985	Rodolfo Alfredo Jiménez Villarreal		1985–1988	53rd Congress
1988	Rogelio Montemayor Seguy[b] Carlos Fermín Juaristi Septién		1988–1990 1990–1991	54th Congress
1991	Jesús María Ramón Valdés		1991–1994	55th Congress
1994	Marco Antonio Dávila Montesinos		1994–1997	56th Congress
1997	Horacio Veloz Muñoz		1997–2000	57th Congress
2000	Ernesto Saro Boardman[19] María Teresa Romo Castillón[20]		2000–2002 2002–2003	58th Congress
2003	Óscar Pimentel González[21][c] Norma Dávila Salinas[22]		2003–2005 2005–2006	59th Congress
2006	Jericó Abramo Masso[23]		2006–2009	60th Congress
2009	Rubén Moreira Valdez[24] Diana Patricia González Soto[25]		2009–2010 2010–2012	61st Congress
2012	Fernando de las Fuentes[26]		2012–2015	62nd Congress
2015	Armando Luna Canales[27]		2015–2018	63rd Congress
2018[28]	Martha Garay Cadena [es][29]		2018–2021	64th Congress
2021[30]	Jericó Abramo Masso[31]		2021–2024	65th Congress
2024[4]	Jericó Abramo Masso[5]		2024–2027	66th Congress

Presidential elections

Coahuila's 4th district

Election	District won by	Party or coalition	%
2018[32]	Andrés Manuel López Obrador	Juntos Haremos Historia	37.0400
2024[33]	Claudia Sheinbaum Pardo	Sigamos Haciendo Historia	45.8491

Notes

1. The remainder of the municipality is assigned to the 7th district
2. Montemayor took leave of his seat in 1990 to contend for a Senate seat in the 1991 mid-terms.
3. Pimentel requested indefinite leave from Congress on 17 November 2005.