Thomas Rivera Schatz New Progressive José Dalmau Santiago Popular Democratic The 2020 Puerto Rico Senate election was held on November 3, 2020, to elect the members of the 27th Senate of Puerto Rico, concurrently with the election of the Governor, the Resident Commissioner, the House of Representatives, and the mayors of the 78 municipalities.

The New Progressive Party lost their two-thirds super-majority, but the Popular Democratic Party failed to win the 14 seats needed for a majority.

The Puerto Rican Independence Party and Independent senator Vargas Vidot retained their seats, while the Citizen's Victory Movement and Project Dignity gained 2 and 1 seats respectively.

José Luis Dalmau (PPD) was elected Senate President on January 2.

María de Lourdes Santiago placed 1st for the second time (1st being 2012) and won a third non-consecutive term; Joanne Rodríguez Veve came in 2nd place, while Senate President Thomas Rivera Schatz came in 4th place, losing 3.74% of the vote relative to his last performance.