Coahuila Rattles Mexico's Parties

The legislative elections of the Mexican state of Coahuila, held this past Sunday, shocked the nation. The Institutional Revolutionary Party (PRI) emerged victorious, sweeping aside the competition in winning in every local district. Although a state election, national politics has been upended by such a crushing defeat, prompting searching reflections for all the forces preparing for the 2027 midterm elections, in which the entire Chamber of Deputies, multiple governorships, state congresses, and thousands of municipal positions will be at stake, defining the balance of power during the second half of the presidential term.

These necessary reflections ought to occur at local and national levels. The state of Coahuila is undoubtedly an interesting case for studying the PRI, which has remained in power there since 1929. Its June 7 victory carries significant symbolic weight, it being the third consecutive time the PRI has won all local districts. This electoral triumph reinforces that the PRI continues to be a serious and relevant political force, with genuine momentum to bring to the rest of the country.

However, as the National Action Party (PAN) pointed out after these elections, the political reality of Coahuila is very different from the national reality. It has a population of approximately 3.15 million inhabitants (compared to the more than 132 million who inhabit the entire Mexican territory), and voter turnout was only 51% of a voter registry of 2,450,297 registered voters. The PRI, resultantly, cannot afford to be overconfident heading into the midterm elections, its remarkable victory far from a guarantee that such a resounding success can be replicated in other Mexican states or in the elections for the Chamber of Deputies.

The other aforementioned level, the national, should focus on the excessive confidence shown by the other parties – such as the PAN and Movimiento Ciudadano (MC), as well as by MORENA, the Labour Party (PT) and the Green Party – demonstrating that the current strategies of all these political forces are far from perfected at present.

On the one hand, the results obtained by the PAN and MC when competing separately highlight the limitations of their current electoral strategies. For MORENA, this election is a clear sign that it is not an invincible party. Likewise, for the PT and the Green Party, MORENA's defeat presents an opportunity to toughen their negotiations when defining candidacies within future coalitions, especially considering recent disagreements with their majority partner.

The PAN and MC must seriously consider the PRI's call to form an alliance against the ruling coalition. This union could allow them to gain seats in the national congress and challenge the legislative majority held by MORENA and its allies. However, for the gubernatorial elections it's evident that the only truly viable alliance for the PAN would be with the PRI, since MC has become a direct political rival in states like Nuevo León and Jalisco, where the orange party wrested power from these two traditional forces.

The PAN must recognise that the PRI retains territorial and electoral strength that could prove decisive. Rejecting alliances for ideological or historical reasons could end up favouring MORENA in states where a united opposition could tip the balance.

The situation for MC is different at the state level. Its political incentive remains to consolidate itself as an independent alternative rather than joining a traditional opposition bloc. For MC, this election should also serve as a moment of introspection. If the party aspires to establish itself as a genuine third way between the ruling party and the rest of the opposition, it will need to define more clearly what it stands for ideologically. In recent years it has projected a modern and disruptive image, at times slipping into prioritising campaigns focused on candidate personalities or digital communication strategies rather than the development of solid proposals. Beyond the immediate election results, MC faces the challenge of demonstrating that it can be more than just a haven for figures from other political forces. If it wishes to consolidate itself as a long-term national alternative, it must strengthen its own ranks, develop an identity consistent with its social-democratic roots, and avoid relying excessively on the media appeal of certain candidates.

For the national ruling party, the lesson is equally clear. MORENA remains the country's main political force, but Coahuila demonstrates that elections are not won solely on party branding. Meanwhile, the key lesson for the PT and the Green Party is that, despite their status as satellite parties, they still possess the ability to exert pressure within their coalition with MORENA in order to secure candidacies in clearly competitive electoral districts. If MORENA continues to impose its will unilaterally, these parties could become inconvenient rivals capable of siphoning votes away from the ruling party in elections where they choose to compete separately, and where the margin of victory is narrow.

Ultimately, the Coahuila elections should not be understood as a prediction of what will happen in 2027, but rather as an opportunity for reflection for all parties concerned. While some will need to rethink their alliance strategies, others will have to strengthen their identity, renew their leadership, and avoid complacency. What is at stake next year is too important to ignore the lessons learned in Coahuila. Parties in Mexico should prepare themselves seriously for one of the most crucial elections of the current political cycle next year.

Image: Flickr/Toño Hernández

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