1st federal electoral district of Coahuila

Coahuila's 1st
Electoral district of the Chamber of Deputies of Mexico
1st district since 2022
Incumbent
Member	Brígido Moreno Hernández
Party	▌Labour Party
Congress	66th (2024–2027)
District
State	Coahuila
Head town	Piedras Negras
Coordinates	28°40′N 100°40′W / 28.667°N 100.667°W / 28.667; -100.667
Covers	Acuña, Jiménez, Morelos, Nava, Piedras Negras, Zaragoza
Region	Second
Precincts	206
Population	403,123 (2020 Census)

The 1st federal electoral district of Coahuila (Spanish: Distrito electoral federal 01 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]

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, re-elected in the 2024 general election, is Brígido Ramiro Moreno Hernández of the Labour Party (PT).^[4][5]

In its 2022 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 1st district comprises 206 electoral precincts (secciones electorales) across six municipalities in the state's extreme north:^[7][8]

• Acuña, Jiménez, Morelos, Nava, Piedras Negras and Zaragoza.

The head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Piedras Negras. The district reported a population of 403,123 in the 2020 Census.^[1]

2017–2022

Between 2017 and 2022, the district covered seven of the state's northern municipalities: the six included in the 2022 plan, plus San Juan de Sabinas. The head town was at Piedras Negras.^[11][12]

2005–2017

Under the 2005 districting scheme, the district covered 10 northern municipalities: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, Piedras Negras, Villa Unión and Zaragoza. The head town was the city of Piedras Negras.^[13][14]

1996–2005

Between 1996 and 2005, the 1st district's territory was in the north and north-east region of the state and covered 11 municipalities: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Múzquiz, Nava, Piedras Negras, Villa Unión and Zaragoza. The head town was at Piedras Negras.^[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] The 1st district had its head town at Saltillo and it covered that city.^[16]

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

First federal electoral district of Coahuila

Election	Deputy	Party	Term	Legislature
1916 [es]	Manuel Aguirre Berlanga [es][17][18]		1916–1917	Constituent Congress of Querétaro
1917	Serapio Aguirre[19]	PLC	1917–1918	27th Congress
1918	Ernesto Meade Fierro[20]		1918–1920	28th Congress
1920	Miguel Alessio Robles [es][21]		1920–1922	29th Congress
1922 [es]	Lorenzo Dávila[22]		1922–1924	30th Congress
1924	Jacobo Cárdenas[23]		1924–1926	31st Congress
1926	Juan L. Morales[24]		1926–1928	32nd Congress
1928	Rómulo Moreira[25]		1928–1930	33rd Congress
1930	Ricardo Ainslie R.[26]		1930–1932	34th Congress
1932	Ricardo Ainslie R.[27]		1932–1934	35th Congress
1934	Jesús Govea T.[28]		1934–1937	36th Congress
1937	Tomás Garza Felán[29]		1937–1940	37th Congress
1940	Pedro Cerda[30]		1940–1943	38th Congress
1943	Francisco López Serrano [es][31]		1943–1946	39th Congress
1946	Federico Berrueto Ramón [es][32]		1946–1949	40th Congress
1949	Evelio González Treviño[33]		1949–1952	41st Congress
1952	Rafael Carranza Hernández		1952–1955	42nd Congress
1955	Carlos Valdés Villarreal[34]		1955–1958	43rd Congress
1958	Florencio Barrera Fuentes[35]		1958–1961	44th Congress
1961	Salvador González Lobo[36]		1961–1964	45th Congress
1964	Tomás Algaba Gómez[37]		1964–1967	46th Congress
1967	José de las Fuentes Rodríguez[38]		1967–1970	47th Congress
1970	Gustavo Guerra Castaños[39]		1970–1973	48th Congress
1973	Jesús Roberto Dávila Narro[40]		1973–1976	49th Congress
1976	José de las Fuentes Rodríguez[41]		1976–1979	50th Congress
1979	Jorge Masso Masso[42]		1979–1982	51st Congress
1982	Abraham Cepeda Izaguirre[43]		1982–1985	52nd Congress
1985	Eliseo Mendoza Berrueto[a][44] Hilda Aurelia Lozano Flores		1985–1987 1987–1988	53rd Congress
1988	Enrique Martínez y Martínez[45]		1988–1991	54th Congress
1991	Óscar Pimentel González[46]		1991–1994	55th Congress
1994	Alejandro Gutiérrez Gutiérrez[47]		1994–1997	56th Congress
1997	Francisco García Castells[48]		1997–2000	57th Congress
2000	Claudio Bres Garza[49][b] Armín Valdés Torres[50]		2000–2002 2002–2003	58th Congress
2003	Jesús María Ramón Valdés[51]		2003–2006	59th Congress
2006	Ángel Humberto García Reyes[52]		2006–2009	60th Congress
2009	Francisco Saracho Navarro[53]		2009–2012	61st Congress
2012	Irma Elizondo Ramírez[54][c] María de Lourdes Flores Treviño[56]		2012–2014 2014–2015	62nd Congress
2015	Francisco Saracho Navarro[57]		2015–2018	63rd Congress
2018	Lenin Pérez Rivera [es][58][d]		2018–2021	64th Congress
2021	Brígido Ramiro Moreno Hernández[60]		2021–2024	65th Congress
2024[4]	Brígido Ramiro Moreno Hernández[5]		2024–2027	66th Congress

First federal electoral district of Coahuila

Election	District won by	Party or coalition	%
2018[61]	Andrés Manuel López Obrador	Juntos Haremos Historia	46.6003
2024[62]	Claudia Sheinbaum Pardo	Sigamos Haciendo Historia	56.4507