Counting only sourced positions, the party most like the PRI is not the PAN, its coalition partner in 2021 and 2024, but Movimiento Ciudadano. Both have 37 documented statements, and only one puts them in opposing camps; on none are they more than two steps apart on the scale. With the PAN, by contrast, there are five such clashes, among them GM maize, abortion and marijuana. The quiz's match score, which also counts estimated positions, points the same way: the PRI matches Movimiento Ciudadano and SOMOS at 83% each, and the PAN at 79%. That matters for 2027: its leadership has called for a broad opposition front, and as of late October 2026 neither the PAN nor Movimiento Ciudadano had announced a federal coalition with it.
The one statement that divides it from Movimiento Ciudadano is also the one that leaves it alone against the other seven: it is the only party opposed to lifting the immunity of deputies and senators. Its documents do not propose ending it, and in March 2025 its caucus backed, 33 votes to 0, a finding that a request to strip a deputy's immunity should not proceed. That is why "Institutions and corruption," at 1.52 points, is its second most distinctive theme, even though it otherwise sides with the opposition there: it voted against abolishing the autonomous bodies, its 2024 program proposes a law guaranteeing their independence and budgets, and its deputies asked to bring forward the nepotism ban, although they later approved the version that delays it until 2030.
What sets it furthest from the average is "Justice and the judiciary" (1.95 points), and three other opposition parties answer exactly alike (the PAN, Movimiento Ciudadano and SOMOS). Its platform firmly rejects choosing judges by popular vote; its deputies voted against the 2025 amparo changes and against barring the Court from reviewing constitutional amendments. On security, its program wants a civilian National Guard, and none of its 37 deputies voted in 2024 to move it under the Defense ministry.
Its social profile shows where it parts with the PAN. It voted 33 to 1 for the constitutional ban on GM maize. Its declaration of principles asks that women not be criminalized for exercising reproductive rights, though it sets no time limits, and it calls the party social democratic, with state stewardship and a social market economy. It is the strongest backer of letting states and municipalities deliver social programs, with safeguards against patronage; it wants full-day schools back, and it shares only with the PT the firmest support for raising the minimum wage faster than prices every year. With the PAN it shares two rarities: they alone defend selling or inheriting a water concession, which its floor leader missed in the 2025 law, and putting North American partners first.
Overall, the PRI says yes to 22 of the 45 statements, no to 13 and stays in the middle on 10; it picks an extreme 11 times, and 7 positions are estimated, among them federal purchasing of medicines, fracking, mining and euthanasia. Of its twelve themes, the one that strays least from the average is "Rights and freedoms" (0.38 points), with two of six positions estimated. The party it matches least is Morena (59%).
How the eight parties’ places on the political compass are calculated, statement by statement, is explained in the analysis «Left-wing and right-wing parties in Mexico: the 2027 compass».
