His parents are Juan Antonio Sáez Henríquez and Mónica Inés Quiroz Reyes.

[1] He has been a member of the Democratic Revolution since the beginning of the party and was a participant in the creation of the Frente Amplio in the Los Lagos region.

[3] In 2020, he ventured for the first time as a candidate in a popular vote, in the Frente Amplio gubernatorial primaries for the Los Lagos region.

[4] Finally, in the elections for regional governor of Los Lagos he obtained 9.26% of the votes, finishing in last place.

26 for the parliamentary elections of that year, on the Apruebo Dignidad list and representing the DR. During the campaign he signed a commitment to legislate in favor of the protection of the biodiversity of the Chiloé archipelago.