The former student leader, 35, is the youngest presidential candidate and represents the Apruebo Dignidad coalition, made up of the Broad Front and the Chile Digno alliance, formed by several political and social parties and movements.
According to the poll carried out by the Data Influye investigation agency, Boric has a 32- percent voting intention, 6.3 points more than the previous poll.
Far-right candidate Jose Antonio Kast, from the Republican Party, is in the second place with 27 percent; and Senator Yasna Provoste, from Nuevo Pacto Social, comes in the third place with 13 points.
They are followed by Sebastian Sichel, from the ruling Chile Podemos Mas coalition (9); Franco Parisi, from Partido de la Gente (8); Marco Enriquez-Ominami, from Partido Progresista (4), and Eduardo Artes, from Union Patriotica (2).
The poll was carried out online between October 29 to 31 with 1,743 people over 18 years of age from all over the country.
The election in Chile will be held on November 21, and deputies, senators and regional councilors will be elected besides the president.