| Election Name: | 2020 Puerto Rico Senate elections |
| Country: | Puerto Rico |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2016 Puerto Rico Senate election |
| Previous Year: | 2016 |
| Election Date: | November 3, 2020 |
| Next Election: | 2024 Puerto Rico Senate election |
| Next Year: | 2024 |
| Seats For Election: | All 27 seats in the Senate of Puerto Rico |
| Majority Seats: | 14 |
| 1Blank: | Seats up |
| 2Blank: | Races won |
| Party1: | Popular Democratic Party of Puerto Rico |
| Leader1: | José Luis Dalmau |
| Leader Since1: | January 2, 2021 |
| Seats Before1: | 7 |
| Seats After1: | 12 |
| Seat Change1: | 5 |
| Popular Vote1: | 1,158,166 |
| Percentage1: | 34.63% |
| Party2: | New Progressive Party of Puerto Rico |
| Leader2: | Thomas Rivera Schatz |
| Leader Since2: | January 2, 2017 |
| Seats Before2: | 21 |
| Seats After2: | 10 |
| Seat Change2: | 11 |
| Popular Vote2: | 1,198,707 |
| Percentage2: | 35.85% |
| Party3: | Movimiento Victoria Ciudadana |
| Leader3: | Ana Irma Rivera Lassén |
| Leader Since3: | January 2, 2021 |
| Seats Before3: | 0 |
| Seats After3: | 2 |
| Seat Change3: | 2 |
| Popular Vote3: | 445,996 |
| Percentage3: | 13.34% |
| Party4: | Independence Party (Puerto Rico) |
| Leader4: | María de Lourdes Santiago |
| Leader Since4: | January 2, 2021 |
| Seats Before4: | 1 |
| Seats After4: | 1 |
| Popular Vote4: | 330,301 |
| Percentage4: | 9.88% |
| Party5: | Project Dignity |
| Leader5: | Joanne Rodríguez Veve |
| Leader Since5: | January 2, 2021 |
| Seats Before5: | 0 |
| Seats After5: | 1 |
| Seat Change5: | 1 |
| Popular Vote5: | 143,692 |
| Percentage5: | 4.30% |
| Party6: | Independent politician |
| Leader6: | Vargas Vidot |
| Leader Since6: | January 2, 2017 |
| Seats Before6: | 1 |
| Seats After6: | 1 |
| Popular Vote6: | 67,151 |
| Percentage6: | 2.01% |
| President of the Senate | |
| Before Election: | Thomas Rivera Schatz |
| Before Party: | New Progressive Party of Puerto Rico |
| After Election: | José Dalmau Santiago |
| After Party: | Popular Democratic Party of Puerto Rico |
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 winners will be elected to a four-year term from January 2, 2021, to January 2, 2025.
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.
There are 88 candidates running for senator:
| -- row 1 of 3 --> | PNP1 | PNP2 | PNP3 | PNP4 | PNP5 | PNP6 | PNP7 | PNP8 | PNP9 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PNP10 | PNP11 | PNP12 | PNP13 | PNP14 | PNP15 | PNP16 | PNP17 | PNP18 | ||||||||||
| PNP19 | PNP20 | PNP21 | PPD1 | PPD2 | PPD3 | PPD4 | PPD5 | PPD6 | ||||||||||
| PPD7 | PIP1 | IND1 |
| -- row 1 of 3 --> | PPD1 | PPD2 | PPD3 | PPD4 | PPD5 | PPD6 | PPD7 | PPD8 | PPD9 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PPD10 | PPD11 | PPD12 | PNP1 | PNP2 | PNP3 | PNP4 | PNP5 | PNP6 | ||||||||||
| PPD7 | PPD8 | PPD9 | PPD10 | MVC1 | MVC2 | PIP1 | PD1 | IND1 |
|-|colspan=15 align=center||- style="background-color:#E9E9E9"! rowspan="2" colspan="2" style="text-align:center;" | Parties! style="text-align:center;" colspan="3" | District! style="text-align:center;" colspan="3" | At-large! rowspan="2" style="text-align:center;" colspan="1" | Total seats! rowspan="2" style="text-align:center;" colspan="1" | Composition! rowspan="2" style="text-align:center;" colspan="1" | ±%|- style="background-color:#E9E9E9"! style="text-align:center;" | Votes! style="text-align:center;" | %! style="text-align:center;" | Seats! style="text-align:center;" | Votes! style="text-align:center;" | %! style="text-align:center;" | Seats|- style="text-align:right;"| bgcolor=#cc0033|| style="text-align:left;" | Popular Democratic Party (PPD)| 797,203| 36.50%| 10| 377,195| 31.21%| 2| 12| | 9|- style="text-align:right;"| bgcolor=#0000cc width=3 || style="text-align:left;" | New Progressive Party (PNP)| 814,941| 37.32%| 6| 402,774| 33.33%| 4| 10| |12|- style="text-align:right;"| bgcolor=#CFB53B || style="text-align:left;" | Citizen's Victory Movement (MVC)| 315,931| 14.46%| 0| 133,069| 11.01%| 2| 2| | 2|- style="text-align:right;"| bgcolor=#33cc66 || style="text-align:left;" | Puerto Rican Independence Party (PIP)| 198,093| 9.07%| 0| 136,679| 11.32%| 1| 1| | 1|- style="text-align:right;"| bgcolor=#00B7EB || style="text-align:left;" | Project Dignity (PD)| 57,465| 2.63%| 0| 88,716| 7.35%| 1| 1| | 1|- style="text-align:right;"| bgcolor=#DDDDDD || style="text-align:left;" | Independents| 0| 0%| 0| 69,810| 5.78%| 1| 1| | 1|- style="background-color=#0000cc;text-align:right;"|-|align=left colspan=2|Total| 2,183,633| 100.0| 16| 1,208,243| 100.0| 11| 27|||}
Every party has a seat in the senate, making it the first time since 2004 that all parties are represented. 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.