Mexico will hold its midterm elections on Sunday, June 6, 2027, renewing all 500 federal deputies, 17 governorships and more than 19,000 local posts across the 32 states, according to the [National Electoral Institute](https://www.ine.mx/voto-y-elecciones/elecciones-2027/) (INE). It will be the first major test at the polls for Claudia Sheinbaum's government, and October 2026 polls show Morena with a wide lead over a divided opposition.
The 2026-2027 Federal Electoral Process formally began on September 10, 2026. This page brings together the date, what is being elected, the official calendar, the current makeup of Congress and the polls, and it is updated at the same address as the process moves forward.
When are Mexico's 2027 elections
| Date | Stage of the electoral process |
|---|---|
| July 30, 2026 | INE approves the master plan and calendar (505 activities) |
| September 10, 2026 | Formal start of the 2026-2027 Federal Electoral Process |
| September 30, 2026 | 32 local councils installed |
| October and November 2026 | Independent candidates file their intention to run |
| November 30, 2026 | 300 district councils installed |
| January 4 to February 12, 2027 | Pre-campaigns |
| March 22 to April 3, 2027 | Candidate registration |
| April 4 to June 2, 2027 | Campaigns |
| June 6, 2027 | Election day |
| June 9 and 13, 2027 | District counts and proportional representation count |
Sources: INE, 2027 elections, INE's Central Electoral and Diario de Tabasco, which detailed the pre-campaign, registration and campaign dates at the start of the process.
What is at stake in Mexico's 2027 elections
| Office | Number |
|---|---|
| Federal deputies | 500 (300 by majority vote and 200 by proportional representation) |
| Governorships | 17 |
| State legislators | 1,098 |
| Mayors | 2,204 |
| Trustees (sindicaturas) | 1,975 |
| Council members (regidurías) | 14,560 |
| Community presidents and municipal boards | 299 and 132 |
| Total posts | More than 19,000 |
| Planned polling stations | 176,741 (6,738 more than in 2024) |
Sources: INE and Diario de Tabasco. There is no presidential or Senate race: President Sheinbaum's term runs to 2030, and senators elected in 2024 also serve until 2030.
The 17 governorships at stake are Aguascalientes, Baja California, Baja California Sur, Campeche, Chihuahua, Colima, Guerrero, Michoacán, Nayarit, Nuevo León, Querétaro, Quintana Roo, San Luis Potosí, Sinaloa, Sonora, Tlaxcala and Zacatecas.
Polls for Mexico's 2027 elections
| Party | El Financiero (published Oct 19, 2026) | Buendía & Márquez for El Universal (Sep 7, 2026) |
|---|---|---|
| Morena | 46% | 35% |
| PAN | 8% | 11% |
| PRI | 6% | 9% |
| Movimiento Ciudadano | 5% | 9% |
| PVEM | 2% | 5% |
| PT | 1% | 2% |
| No preference | 31% | n/a |
Sources: El Financiero, a phone survey of 800 adults conducted in September, and El Universal. The figures are not directly comparable because the methods differ: El Financiero reports raw preference, with 31% not choosing a party, and Buendía & Márquez notes that the gaps between PAN, PRI and MC are too small to name a clear second place. In both, Morena alone exceeds the three opposition parties combined. "n/a": not reported in the source.
The current makeup of the Chamber of Deputies
| Party | Seats (66th Legislature) |
|---|---|
| Morena | 254 |
| PAN | 69 |
| PVEM | 61 |
| PT | 49 |
| PRI | 37 |
| Movimiento Ciudadano | 29 |
| Independent | 1 |
Source: Chamber of Deputies, as listed on the 66th Legislature page. Morena and its allies PVEM and PT hold 364 of 500 seats, more than the 334 needed for the two-thirds majority required to amend the Constitution. Keeping that majority is what is at stake in 2027. To see what lawmakers earn, read how much a member of Congress earns in Mexico and how much a senator earns.
The judicial election and electoral reform
The judicial election will no longer coincide with the 2027 vote. In May 2026, Congress approved a constitutional reform moving the second election of judges from June 11, 2027, to June 4, 2028; the Senate passed it 86 to 41 and sent it to the state legislatures (La Razón). INE's 2027 page does not include judicial posts.
The president's electoral reform, which sought to eliminate the 32 proportional-representation senators, change how the 200 proportional deputies are chosen and cut party funding by 25% (Expansión), failed: in March 2026 it received 259 votes in favor and 234 against in the Chamber, well short of the 334 needed, because the PT and PVEM voted against it (AP via KEYT; Por Esto). As a result, 2027 will be held under the current rules.
How to cite this data
You may use the figures on this page by citing the original source and Vivarae News. Suggested citation: "Mexico's 2027 midterm elections: date, what is at stake and polls", Vivarae News, updated October 22, 2026, https://vivaraenews.com/en/mexico-2027-midterm-elections-date-what-is-at-stake-and-polls/. We update this page at the same address when new data come out. We also follow Argentina's 2027 presidential election and Brazil's runoff.
Frequently asked questions
When are Mexico's 2027 elections?
On Sunday, June 6, 2027.
What is elected in Mexico in 2027?
500 federal deputies, 17 governors and more than 19,000 local posts, including state legislatures, municipal governments and councils.
Is there a presidential election in 2027?
No. President Claudia Sheinbaum's term runs until 2030. The 2027 vote is a midterm election.
Which states elect a governor in 2027?
Aguascalientes, Baja California, Baja California Sur, Campeche, Chihuahua, Colima, Guerrero, Michoacán, Nayarit, Nuevo León, Querétaro, Quintana Roo, San Luis Potosí, Sinaloa, Sonora, Tlaxcala and Zacatecas.
Who leads the polls?
Morena: 46% in the El Financiero poll published on October 19, 2026, and 35% in Buendía & Márquez's September survey.
Will there be a judicial election in 2027?
No. A reform approved in May 2026 moved it to June 4, 2028.
