2023 Buenos Aires City elections

General elections were held in the City of Buenos Aires on 22 October 2023, coinciding with the general election being held nationwide. The Chief of Government (mayor), half of the City Legislature and all 150 members of the communal boards were elected to four-year terms.

2023 Buenos Aires City elections

Mayoral election
← 2019 22 October 2023 2027 →
Turnout	64.16%
Nominee Jorge Macri Leandro Santoro Party PRO MNA Alliance JxC UP Running mate Clara Muzzio Bárbara Rossen Popular vote 895,131 581,450 Percentage 49.67% 32.27%   Nominee Ramiro Marra Vanina Biasi Party PL Workers' Party Alliance LLA FIT – Unidad Running mate Eduardo Martino Jessica Gentile Popular vote 248,263 77,077 Percentage 13.78% 4.28%
Results of the Chief of Government election by electoral circuit. Darker shades indicate a higher vote share.
Chief of Government before election Horacio Rodríguez Larreta PRO–JxC Elected Chief of Government Jorge Macri PRO–JxC
City Legislature
← 2021 22 October 2023 2025 →
30 out of 60 seats in the City Legislature
Turnout	64.16%
Party Leader Vote % Seats +/– JxC Jorge Macri 49.73 15 0 UP Leandro Santoro 31.13 10 +2 LLA Ramiro Marra 13.91 4 −1 FIT – Unidad Vanina Biasi 5.23 1 −1 This lists parties that won seats. See the complete results below.

In the mayoral election, Jorge Macri, of the ruling PRO party, won in the first round of voting with 49.67% of the vote. According to the city's constitution, a candidate for Chief of Government must achieve over 50% of the vote in order to win in the first round, but the second-most voted candidate, Leandro Santoro of Union for the Homeland, dropped out of the race for the second round and ceded victory to Macri.

This was the seventh general election in the City of Buenos Aires since the adoption of the 1996 Constitution, which granted autonomy to the city and allowed it to vote for its own Chief of Government. It was also the second election in which the Single Electronic Ballot (Boleta Única Electrónica, BUE) voting system was implemented, after 2015.

Background

The 2019 elections in Buenos Aires had resulted in the re-election of incumbent Chief of Government Horacio Rodríguez Larreta with a record 55.90% of the vote in the first round. Rodríguez Larreta's party, Republican Proposal (PRO) and its Juntos por el Cambio alliance also remained the largest force in the City Legislature.

On 13 April 2023, Rodríguez Larreta issued a decree making the 2023 elections in Buenos Aires concurrent with the national general election. Rodríguez Larreta was constitutionally barred from running for re-election a second time, and instead launched his presidential run.

This was the second election in which the Single Electronic Ballot (Boleta Única Electrónica, BUE) voting system was implemented, after 2015. It was, however, the first time the BUE system was implemented in a local election concurrent with a national election, which meant two different voting systems were used in the same election day.

Candidates

Coalition		Mayoral candidate (party) Prior political experience	Vice mayoral candidate (party) Prior political experience	Parties
		Jorge Macri (PRO) Cabinet Chief (2021–2023) Mayor of Vicente López (2011–2021)	Clara Muzzio (PRO) Minister of Public Space and Urban Hygiene (2019–2023)	PRO UCR CC-ARI PS PDP UCEDÉ UNIR GEN PDC PRF ERF
		Leandro Santoro (MNA) National Deputy (2021–2023) City Legislator (2019–2021)	Bárbara Rossen (PJ)	PJ FR FPG FG PV ND Kolina PI CF NE PSOL FORJA PF PC PTP PSA SL
		Ramiro Marra (PL) City Legislator (2021–present)	Eduardo Martino (Ind.)	MID UNITE PD
		Vanina Biasi (PO)	Jessica Gentile (MST)	PO PTS MST IS

Opinion polling

Pollster/client(s)	Date(s) conducted	Sample size	Macri JxC	Santoro UP	Marra LLA	Biasi FIT-U	Others	Blank	Abst. Undec.	Lead
2023 city elections	22 Oct 2023	–	49.7	32.3	13.8	4.2	–	11	35.8	17.4
Circuitos	10-11 Oct 2023	1,129	44.5	23.1	21.9	2.9	–	3.1	4.5	21.4
Opina Argentina	6-10 Oct 2023	820	44	22	20	3	–	6	5	22
Proyección Consultores	5-10 Oct de 2023	1,287	47.5	26.7	19.4	2.8	–	–	3.6	20.8
Federico González & Asociados	28-30 Sep 2023	1,200	45.8	25.8	24.8	3.7	–	–	–	20
Federico González & Asociados	6-8 Sep 2023	1,000	46.7	23.0	22.7	4.0	–	3.3	7.5	23.7
Circuitos	24-26 Aug 2023	1,197	42.3	21.9	20.4	2.7	–	7.5	5-2	20.4
CB Consultora	22-24 Aug 2023	1,105	41.6	22.5	18	3.7	–	7	7.2	19.1
2023 primary elections	13 Aug 2023	–	55.9	22.1	12.9	3.6	2.5	2.7	37.5	33.7
Federico González & Asociados	31 Jul - 3 Aug 2023	1,000	47.9	24.4	19	3.8	0.6	4.3	9.9	23.5
Federico González & Asociados	17-19 Jul 2023	1,400	45.4	20.5	16.1	2.4	1	3.2	9.3	24.9
Circuitos	3-5 Jul 2023	1,177	49.6	16.9	15.7	2.3	7.4	8.1	-	32,7
Consultora Tendencias	2-5 Jun 2023	2,506	46.8	19.7	8.8	5.1	2.3	4.2	13.1	27.1
Federico González & Asociados	1-5 Jun 2023	1,400	36.7	20.7	24.5	1.4	1.4	5.4	9.9	12.2
			41	21.3	22.1	1.4	1.3	4.3	8.6	18.9
Federico González & Asociados	29 Apr - 1 May 2023	1,400	48.1	20	15.4	0.6	1	3.6	10.4	28.1
Circuitos	26-28 Apr 2023	1,192	48.6	20.8	13.9	2.1	2.5	12.1	-	27.8
Federico González & Asociados	2-3 Apr 2023	800	42.5	20.2	18.7	3.1	5.2	2.6	7.7	22.3
Solmoirago	Mar 2023	400	55.3	20.9	9.9	3.1	-	-	10.8	34.4
Consultora Tendencias	13-18 Mar 2023	746	46.8	23.7	11.1	5.2	1.8	3.1	8.3	23.1
Circuitos	13-14 Mar 2023	1,196	49.5	21	12.9	6.1	-	10.5	-	28.5
Opina Argentina	25-27 Feb 2023	800	47	22	17	4	4	2	4	25
Federico González & Asociados	21-22 Feb 2023	800	42.4	20.5	19.1	4.2	3.1	3.1	7.6	21.9
Opinaia	5-17 Feb 2023	500	48	16	13	3	-	7	13	32
Circuitos	8-10 Feb 2023	1,184	47.1	21.2	14	5.4	-	12.3	-	25.9
Federico González & Asociados	15-16 Jan 2023	800	40.4	21.8	22.3	4.1	0.5	3.2	7.7	18.1
Opinaia	2-9 Jan 2023	510	46	14	12	4	-	4	18	32

1. With Martín Lousteau as JxC candidate for mayor
2. With Jorge Macri as JxC candidate for mayor

Results

Primaries

Mayoral primaries

Coalition		List	Mayoral candidate	Candidate votes		Overall votes
				Votes	%	Votes	%
	Juntos por el Cambio	Vayamos por más	Jorge Macri	540,132	29.52	1,051,866	55.93
		Evolución	Martín Lousteau	511,734	27.97
	Union for the Homeland	Alternativa para Ganar Buenos Aires	Leandro Santoro	416,919	22.17	416,919	22.17
	La Libertad Avanza	La Ciudad Avanza	Ramiro Marra	243,202	12.93	243,202	12.93
	Worker's Left Front-Unity	Unidad de Luchadores y la Izquierda	Vanina Biasi	45,608	2.49	68,670	3.65
		Unir y Fortalecer la Izquierda	Jorge Adaro	23.062	1.26
	Principles and Values	Celeste y Blanca	Eduardo Graham	15,133	0.81	15,133	0.81
	Workers' Policy	Unidad Obrera	Valentina Viglieca	8,800	0.47	8,800	0.47
	Freemen of the South Movement	Alternativa Progresista	Adolfo Andrés Buzzo Pipet	7,250	0.39	7,250	0.39
	The Left in the City	Izquierda Anticapitalista	Héctor Antonio Heberling	7,227	0.38	7,227	0.38
	Renovating Aptitude	Primero los Porteños	Juan Pablo Chiesa	5,253	0.28	5,253	0.28
	Patriot Front	Primero la Patria	Alejandro Gustavo Nizzero	5,206	0.28	5,206	0.28
Valid votes						1,829,526	100
Blank votes						51,053	2.71
Invalid votes						3,362	0.18
Total						1,883,941	97.29
Registered voters/turnout						3,014,213	62.50
Source:

Chief of Government

Candidate		Running mate	Party	Votes	%
	Jorge Macri	Clara Muzzio	Juntos por el Cambio	895,131	49.68
	Leandro Santoro	Bárbara Rossen	Union for the Homeland	581,450	32.27
	Ramiro Marra	Eduardo Martino	La Libertad Avanza	248,263	13.78
	Vanina Biasi	Jessica Gentile	Workers' Left Front	77,077	4.28
Total				1,801,921	100.00
Valid votes				1,801,921	88.39
Invalid votes				14,335	0.70
Blank votes				222,383	10.91
Total votes				2,038,639	100.00
Registered voters/turnout				3,177,558	64.16
Source:

Results by commune

Communes won by Macri

Communes won by Santoro

Commune	Macri (JxC)		Santoro (UP)		Marra (LLA)		Biasi (FIT-U)		Total votes
	Votes	%	Votes	%	Votes	%	Votes	%
Comuna 1	55,979	47.37	37,633	31.84	19,274	16.31	5,292	4.48	118,178
Comuna 2	63,506	65.96	18,584	19.30	11,742	12.19	2,453	2.55	96,285
Comuna 3	46,281	43.74	37,132	35.10	17,210	16.27	5,175	4.89	105,798
Comuna 4	48,509	39.19	48,558	39.23	19,931	16.11	6,773	5.47	123,771
Comuna 5	50,599	45.42	41,297	37.07	14,133	12.69	5,364	4.82	111,393
Comuna 6	61,774	52.33	38,407	32.53	13,024	11.03	4,851	4.11	118,056
Comuna 7	56,101	44.30	44,880	35.44	19,797	15.63	5,848	4.62	126,626
Comuna 8	33,998	33.07	43,089	41.91	20,319	19.76	5,406	5.26	102,812
Comuna 9	45,488	42.59	38,449	35.99	17,580	16.46	5,301	4.96	106,818
Comuna 10	50,715	47.34	36,228	33.82	14,988	13.99	5,191	4.85	107.122
Comuna 11	64,030	51.05	39,921	31.83	16,272	12.98	5,191	4.14	125,417
Comuna 12	75,285	54.04	42,374	30.42	16,125	11.58	5,523	3.96	139,307
Comuna 13	98,201	63.09	35,702	22.94	17,009	10.93	4,740	3.04	155,652
Comuna 14	90,686	62.05	34,355	23.51	16,763	11.47	4.341	2.97	146,145
Comuna 15	53,826	45.81	44,130	37.56	13,987	11.90	5,559	4.73	117,502
Prisons	153	14.73	711	68.43	109	10.49	66	6.35	1,039
Total	895,131	49.67	581,450	32.27	248,263	13.78	77,077	4.28	1,801,921

Legislature

Party		Votes	%	Seats
				Won	Total
	Juntos por el Cambio	890,976	49.73	15	30
	Union for the Homeland	557,808	31.13	10	18
	La Libertad Avanza	249,170	13.91	4	9
	Workers' Left Front – Unity	93,759	5.23	1	3
Total		1,791,713	100.00	30	60
Valid votes		1,791,713	87.89
Invalid votes		14,147	0.69
Blank votes		232,779	11.42
Total votes		2,038,639	100.00
Registered voters/turnout		3,177,558	64.16
Source:

See also

• 2023 Argentine general election
• 2023 Argentine provincial elections
• 2023 Buenos Aires provincial election