Joaquín Díaz Mena

On 5 March 2018, Díaz Mena announced his resignation from the PAN and that he would become a member of Morena, declaring that the state party had become a "rich kids' club" and calling out party leaders for leading the "decomposition" of the institution, saying that if the party's founders came back to life, they would be disappointed at its current state. Twelve days later, Morena and the other parties in the Juntos Haremos Historia coalition nominated Díaz Mena as their gubernatorial candidate.

In 2015, Díaz Mena returned to San Lázaro, this time as a proportional representation deputy from the third region. He is a secretary on the Indigenous Matters and South/Southeastern Border Matters Commissions and also serves on the Public Education and Educational Services Commission. He briefly left the Chamber of Deputies in February 2016 after coming down with type A influenza, though he initially had feared he had contracted the zika virus.

Díaz Mena mounted a bid for Governor of Yucatán as the PAN candidate in 2012, ultimately losing to the PRI candidate, Rolando Zapata Bello.

In 2006, voters in the First Federal Electoral District of Yucatán, centered on Valladolid, sent Díaz Mena to the federal Chamber of Deputies for the first time. In the LX Legislature, he was a secretary on the Fishing Commission and also sat on those dealing with Indigenous Matters and Special for Regional Development Projects in Southern and Southeastern Mexico. After leaving the Chamber of Deputies, he became a national-level PAN instructor, a national councilor, and from 2010 to 2011, the local secretary of training for the PAN in San Felipe, as well as a delegate and teacher for the SEP. In 2013, Díaz Mena was said to have temporarily disappeared after a controversy erupted over his being given a high-level educational position without having applied for it.

In 2001, Díaz Mena began his political career when he became the municipal president of San Felipe; the next year, he joined the PAN. In 2004, he was sent as a deputy to the LVII Legislature of Yucatán, where he presided over the Education, Science, Art and Technology Commission; during his two years in the state legislature, he briefly served as the Yucatán state PAN's finance secretary and began studying his master's degrees, one in public administration from the Universidad del Mayab and the other from the UNAM in urban and regional economics.

Díaz Mena obtained a degree in Tourism Business Administration-Hotels and Restaurants from the Instituto Tecnológico de Mérida in 1994; he managed the Mesón Hacienda restaurant, as well as the Hotel Club Las Velas in Cancún. Additionally, he was a teacher; in 1997, he began a four-year stint as a Telesecundaria teacher, spending two of those years at the Colegio de Bachilleres de Yucatán. In the late 1990s, Díaz Mena also began ranching; he got involved with the Ganadería San Joaquín, as well as with the Asociación Ganadera de San Felipe, Yucatán, the local cattle ranchers' association.

Joaquín Jesús Díaz Mena (born 16 August 1974), nicknamed Huacho, is a Mexican politician currently from the National Regeneration Movement (Morena). He was a federal deputy to the LXIII Legislature of the Mexican Congress, representing Yucatán from the third electoral region.