|First weekend in
|Deadline for parties to determine how they will choose their candidates.|
|Sept. 3–9, 2017||First session of Mexico’s National Electoral Institute (INE).|
|Sept. 8, 2017||Publication of the official election calendar.|
|Oct. 12–18, 2017||Registration of party coalitions.|
|Oct. 14, 2017||Deadline for independent candidate registration
(deadline was extended due to the Sept. 19 earthquake in Mexico City).
|October 2017||Deadline for INE’s General Council to determine the spending ceilings for pre-campaigns and pre-candidates.|
|Dec. 14, 2017||Party primaries begin.|
|Jan. 15–30, 2018||Each party must register its electoral platform with INE’s General Counsel.|
|Feb. 11, 2018||Party primaries end.|
|March 11–29, 2018||The INE reviews candidate registrations to ensure that candidates meet legal requirements to run for office. Presidential candidates register for the election.|
|March 30–June 27, 2018||Candidates campaign for election.|
|April 22, 2018||INE scheduled debate for the presidential election. Click here for a video of the debate.
|May 1—5, 2018||Validation of the electoral census and eligible voters in Mexico.|
|May 20, 2018||INE scheduled debate for the presidential election. Click here for a video of the debate.
|June 12, 2018||INE scheduled debate for the presidential election. Click here for a video of the debate.
|June 28–July 1, 2018||No candidate may campaign. Campaign materials must not be published and surveys may not be disseminated.|
|July 1, 2018||Election day. Preliminary electoral results (PREP) are released.|
|Aug. 31, 2018||Deadline for the INE to declare the validity of the election in favor of the candidate who obtained the majority of the votes.|
|Sept. 1, 2018||The new Congress begins its legislative session.|
|Sept. 6, 2018||Deadline for the Superior Chamber of the Electoral Tribunal of the Judicial Branch to proceed with the final count for the presidential election, declare the validity of the results and grant the winning candidate the presidency. The Electoral Tribunal is in charge of resolving any challenges to the presidential election.|
|Dec. 1, 2018||The new administration takes office.|
For more information on Mexico’s electoral timeline, please visit INE.
Rachel A. Meidl
Apr 19 2021 | Center for Energy Studies
Mark P. Jones
Apr 19 2021 | Texas Politics