1988 Mexican general election

A Salinas de Gortari campaign hat.

Stickers from the Salinas de Gortari, Cárdenas and Clouthier campaigns.

Campaign buttons from the Salinas de Gortari, Cárdenas, Clouthier and Ibarra campaigns.

This was the first time that a parallel vote tabulation was implemented in Mexico, and the results were informed by telephone from the electoral districts to the secretariat of the Interior. The institution in charge of counting the votes was the Comisión Federal Electoral (CFE), presided by the Secretary of the Interior, Manuel Bartlett.

On 2 July, four days before the elections, Francisco Xavier Ovando, a top adviser of Cárdenas, was assassinated along with his assistant Román Gil in Mexico City. According to Cárdenas, Ovando had designed a network to obtain information from the 300 electoral districts on election day, to prevent an electoral fraud from the PRI. Two days later, FDN representatives protested the assassination in front of the Secretariat of the Interior. Manuel Bartlett promised that the government would immediately look into the crime, but many years passed before four agents of the Michoacán Police were charged with the assassination, with José Franco Villa (then attorney general of Michoacán) among the intellectual authors. The Governor of Michoacán at the time of the assassinations, Luis Martínez Villicaña, had been one of Cárdenas fiercest rivals, and had heavily repressed FDN officials and sympathizers in the State.[6][7]

The first results arrived very slowly and inconsistently, but they showed that Cárdenas was in the lead.[8] The first official preliminary results were expected to arrive at 7 pm on election day, but once that time arrived, the CFE informed that the counting system had "broken down", and that the CFE president had scheduled a meeting with the Technical Secretariat to "correct the issue". In the meantime, the opposition candidates began to denounce that they had not been granted full access to the counting centers, and marched together to the headquarters of the Secretariat of the Interior to denounce irregularities in the elections. [9]

Later that day, the aforementioned Bartlett said that the telephone network was saturated due to, among other things, adverse weather conditions, characterizing it as a "breakdown of the system."[10] Then-president Miguel de la Madrid later admitted that this "breakdown" was a fabrication.[11] One observer said, "For the ordinary citizen, it was not the network but the Mexican political system that had crashed."[12]

Although the CFE itself stated that it was not able to proclaim a winner yet due to the aforementioned "Network breakdown" (and in fact, would not release results until a week later), on 7 July at 3:10 am the then-Secretary General of the PRI, Jorge de la Vega Domínguez, proclaimed that Salinas de Gortari had won by a great margin, stating that "Mexico has won and has given Carlos Salinas de Gortari a strong, legal and unobjectionable victory". Later that day, Salinas de Gortari himself also proclaimed that he had won.[9] This sparked immediate protests from the opposition, who denounced that a massive electoral fraud was taking place.

Senate

Party or alliance				Votes	%	Seats	+/–
	Institutional Revolutionary Party			9,263,810	50.83	60	–3
	National Action Party			3,293,460	18.07	0	0
	National Democratic Front		Party of the Cardenist Front of National Reconstruction	1,727,376	9.48	0	New
			Popular Socialist Party	1,702,203	9.34	0	–1
			Authentic Party of the Mexican Revolution	1,154,811	6.34	0	0
			Socialist Mexican Party	770,659	4.23	4	+4
	Mexican Democratic Party			223,631	1.23	0	0
	Workers' Revolutionary Party			76,135	0.42	0	0
	Non-registered and common candidates			14,095	0.08	0	0
Total				18,226,180	100.00	64	0
Valid votes				18,226,180	96.35
Invalid/blank votes				689,542	3.65
Total votes				18,915,722	100.00
Registered voters/turnout				38,074,926	49.68
Source: Becerra Chávez, Nohlen, Villalpando Rojas

Chamber of Deputies

Results by party Results by coalition
Party or alliance				Votes	%	Seats	+/–
	Institutional Revolutionary Party			9,276,934	50.97	260	–32
	National Action Party			3,276,824	18.00	101	+63
	National Democratic Front		Party of the Cardenist Front of National Reconstruction	1,704,532	9.37	36	New
			Popular Socialist Party	1,673,863	9.20	49	+38
			Authentic Party of the Mexican Revolution	1,124,575	6.18	30	+19
			Socialist Mexican Party	810,372	4.45	24	+6
	Mexican Democratic Party			244,458	1.34	0	–12
	Workers' Revolutionary Party			88,637	0.49	0	–6
Total				18,200,195	100.00	500	+100
Valid votes				18,200,195	96.70
Invalid/blank votes				620,220	3.30
Total votes				18,820,415	100.00
Registered voters/turnout				38,074,926	49.43
Source: Nohlen, Villalpando Rojas

Years later, the aforementioned Miguel de la Madrid admitted in an autobiography that the infamous "network breakdown" never happened, and that there was not yet any official vote count when the PRI declared Salinas as the winner. In 1991, the ruling PRI and the opposition PAN approved a motion to burn all the ballots, therefore removing all evidence of the fraud.[11] In 2011, PRI politician and contender for the PRI presidential candidacy in 1988 Ramón Aguirre Velázquez, stated that while he believed that Salinas de Gortari had indeed won, the real percentage of votes for him had been around 49%, which greatly alarmed the PRI since they had never obtained less than half of the votes in previous presidential elections they participated in since their foundation, and that the "network breakdown" was precisely an excuse Bartlett came up with to rig the election and to give Salinas enough votes to reach at least 50%.[13]

A 2019 study in the American Political Science Review found "evidence of blatant alterations" in approximately one third of the tallies in the election.[14]

Numerous protests were held throughout the country in the following days. Some of the many irregularities denounced by the opposition included duplicated Voter ID's, anticipated delivery of ballots with votes already marked for the PRI, and even votes from dead people.[9]

On 13 July, exactly one week after the election, the CFE finally released its official results, according to which Carlos Salinas de Gortari had won the election with 50.36% of the votes. Bartlett asked all the political parties to "accept the popular will". However, the nationwide protests continued.

On 1 September, in an unprecedented act, while president De la Madrid was giving his final Address to the Congress, he was interrupted by opposition legislators from the FDN, who protested against the fraud; meanwhile, the PAN legislators stood silent, holding ballots as proof of the fraud. Other legislators threw punches. This was a stark contrast with all previous Addresses to the Congress under the PRI regime, which until then had been little more than ceremonies dedicated to celebrate the President, who would receive unanimous praise from the chamber. Journalist Fidel Samaniego noted that on 1 September 1988 the old ritual of the Address to the Congress had died.[15] The opposition legislators noted that the Constitution established the right of interpellation in Congress.

On 9 September the Chamber of Deputies met to validate the elections. It was already expected that the Deputies would validate the election since the PRI held 263 out of its 500 seats, and thus the PRI legislators could validate the election by themselves even if the opposition unanimously voted against. After a 20-hour session in which the opposition legislators presented evidence of the fraud while the PRI members emphatically denied the accusations, the election results were validated: all 263 PRI legislators voted in favor, 85 opposition members voted against, and the rest abstained. The FDN legislators walked out during the voting. Thus, Salinas de Gortari was now officially President-elect.[16]

Of the five federal entities (the states of Baja California, Michoacán, Morelos, the State of Mexico and the Federal District) in which, according to the official results, Cárdenas had won, three of their State Governors (the Governor of Baja California Xicoténcatl Leyva Mortera, the Governor of Michoacán Luis Martínez Villicaña and the Governor of the State of Mexico Mario Ramón Beteta) were forced to resign in the following months by the PRI, which held them responsible for the party's defeat in those states.

• LIV Legislature of the Mexican Congress