The voters will vote on all 500 MPs in the lower house of Congress as well as on the state governors. Thousands of state and local officials and mayors will also be voting against each other.
And although President Andrés Manuel López Obrador is not facing an election, the vote is to a large extent an assessment of his agenda.
Here’s what you need to know about voting.
Greatest choice ever
All 32 states of Mexico hold local and state votes, with officials at all levels of government being elected.
The number of voters is also higher than ever before: 95 million citizens have registered to vote, up from 89 million in 2018, according to the Mexico Institute of the Woodrow Wilson International Center for Scholars.
The corona crisis will also shape elections. Voters are asked to wear a mask and maintain social distance. The National Electoral Institute, which is overseeing the elections, has advised voters that they are welcome to bring their own pens.
The polling stations are open on Sunday from 8 a.m. to 6 p.m., the counting begins shortly after the polls close. First results are expected on Monday, but the final results won’t be officially confirmed until August 23rd.
Focus on the man
Yes, there are many candidates, but the vote is also an assessment of a man who is not running, President López Obrador.
The Morena party he founded in 2014 is hoping for a majority in Congress. However, it remains unclear whether she can secure a majority in the House of Representatives or depends on the support of her allies, the Greens and the Labor Party.
Morena holds a majority in both houses of Congress. And the party is fully following the agenda of its populist founder, who pledges to eradicate corruption and alleviate poverty while advocating for social justice and equality.
In López Obrador’s ideal world, the party would get more than two thirds of the seats in the lower house – such a majority would allow him to push through constitutional reforms.
AMLO has already managed to consolidate its power. He has increased government control over the electricity grid and restricted the powers of certain independent watchdogs. He has also extended the term of a Supreme Court judge for an additional two years.
His critics warn that he may seek to reformulate the Mexican constitution to run in future elections, even though the current law limits Mexican presidents to a single term of six years. López Obrador has denied these charges, stating that he will retire at the end of his term in office.
What is the opposition saying?
In the meantime, the opposition will seek to capitalize on voter dissatisfaction with the economy and the government’s handling of the pandemic.
The three largest political parties – the National Action Party (PAN), the Institutional Revolutionary Party (PRI), and the Democratic Revolution Party (PRD) – have come together to form a legislative coalition that they believe will counterbalance AMLO will be and his Morena party.
At a press conference last month, the leaders of the three parties focused on the current government’s handling of the economy, security, health care, balance of power and actions that they believe led to “the disqualification of our country’s autonomous bodies”.
Mexico’s vaccination program is lagging behind – only 18% of people have received at least one dose of the vaccine, according to official data from Our World in Data.
The country’s economy was already stuttering before the pandemic broke out, but the virus caused GDP to fall 8.2% last year, according to the International Monetary Fund.
Plagued by violence
The government sends 100,000 National Guard soldiers to secure the election after a violent election campaign. Political violence tends to go hand in hand with elections in Mexico, but this year has been particularly cruel.
You are part of a group of at least 565 politicians or candidates who the company claims have been targeted by some type of crime.
Natalie Gallón, Matt Rivers and Fidel Gutierrez from CNN in Mexico City contributed to the coverage.