| Election | Apruebo Dignidad AD / FA | Dignidad Ahora DA | New Social Pact NPS / NM | Democratic Convergence CD | Chile Vamos Podemos / Vamos | Party of the People PDG | Christian Social Front FSC |
| | | | | | |
| Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats |
| 2021 | 77,503 | 21.81% | 2 | 10,804 | 3.04% | 0 | 81,559 | 22.95% | 2 | | | | 78,240 | 22.02% | 2 | 43,097 | 12.13% | 1 | 39,784 | 11.20% | 1 |
| 2017 | 52,771 | 16.60% | 1 | | | | 76,371 | 24.03% | 2 | 34,311 | 10.80% | 1 | 123,235 | 38.77% | 4 | | | | | | |
Results of the 2021 general election held on 21 November 2021:[10][11]
| Party | Pact | Party | Pact |
| Votes per province | Total votes | % | Seats | Votes | % | Seats |
Los Andes | Marga Marga | Petorca | Quillota | San Felipe | Valpa- raíso (part) |
| Party for Democracy | PPD | | New Social Pact | 1,571 | 12,315 | 2,956 | 10,366 | 6,635 | 1,927 | 35,770 | 10.07% | 1 | 81,559 | 22.95% | 2 |
| Socialist Party of Chile | PS | 18,587 | 1,686 | 523 | 1,808 | 6,359 | 411 | 29,374 | 8.27% | 1 |
| Christian Democratic Party | PDC | 438 | 6,365 | 3,386 | 2,499 | 958 | 415 | 14,061 | 3.96% | 0 |
| Radical Party of Chile | PR | 425 | 534 | 94 | 199 | 105 | 63 | 1,420 | 0.40% | 0 |
| Liberal Party of Chile | PL | 105 | 329 | 78 | 172 | 179 | 71 | 934 | 0.26% | 0 |
| National Renewal | RN | | Chile Podemos + | 5,900 | 23,181 | 7,025 | 16,151 | 8,726 | 3,546 | 64,529 | 18.16% | 2 | 78,240 | 22.02% | 2 |
| Independent Democratic Union | UDI | 1,440 | 5,697 | 1,066 | 2,629 | 2,292 | 587 | 13,711 | 3.86% | 0 |
| Social Convergence | CS | | Apruebo Dignidad | 2,162 | 21,760 | 2,869 | 7,924 | 6,134 | 2,317 | 43,166 | 12.15% | 2 | 77,503 | 21.81% | 2 |
| Communist Party of Chile | PC | 985 | 6,561 | 1,259 | 4,477 | 2,114 | 904 | 16,300 | 4.59% | 0 |
| Democratic Revolution | RD | 536 | 4,156 | 3,806 | 2,244 | 1,008 | 590 | 12,340 | 3.47% | 0 |
| Social Green Regionalist Federation | FREVS | 304 | 1,296 | 268 | 592 | 469 | 283 | 3,212 | 0.90% | 0 |
| Comunes | COM | 79 | 1,456 | 263 | 343 | 217 | 127 | 2,485 | 0.70% | 0 |
| Party of the People | PDG | | | 6,824 | 13,822 | 2,311 | 9,350 | 8,472 | 2,318 | 43,097 | 12.13% | 1 | 43,097 | 12.13% | 1 |
| Republican Party | REP | | Christian Social Front | 2,972 | 21,800 | 2,141 | 6,485 | 4,323 | 2,063 | 39,784 | 11.20% | 1 | 39,784 | 11.20% | 1 |
| Humanist Party | PH | | Dignidad Ahora | 490 | 2,644 | 443 | 1,395 | 937 | 395 | 6,304 | 1.77% | 0 | 10,804 | 3.04% | 0 |
| Equality Party | IGUAL | 328 | 1,705 | 407 | 1,212 | 570 | 278 | 4,500 | 1.27% | 0 |
| United Centre | CU | | United Independents | 976 | 5,633 | 815 | 2,704 | 1,593 | 917 | 12,638 | 3.56% | 0 | 12,638 | 3.56% | 0 |
| Patriotic Union | UPA | | | 772 | 2,419 | 708 | 1,896 | 1,315 | 494 | 7,604 | 2.14% | 0 | 7,604 | 2.14% | 0 |
| Revolutionary Workers Party | PTR | | | 333 | 1,379 | 386 | 1,086 | 642 | 276 | 4,102 | 1.15% | 0 | 4,102 | 1.15% | 0 |
| Valid votes | 45,227 | 134,738 | 30,804 | 73,532 | 53,048 | 17,982 | 355,331 | 100.00% | 8 | 355,331 | 100.00% | 8 |
| Blank votes | 2,185 | 7,044 | 3,028 | 5,902 | 4,684 | 1,875 | 24,718 | 6.15% | | | | |
| Rejected votes – other | 1,962 | 8,059 | 1,897 | 4,966 | 3,649 | 1,389 | 21,922 | 5.45% | | | | |
| Total polled | 49,374 | 149,841 | 35,729 | 84,400 | 61,381 | 21,246 | 401,971 | 50.24% | | | | |
| Registered electors | 92,615 | 292,869 | 73,407 | 172,964 | 126,305 | 41,928 | 800,088 | | | | | |
| Turnout | 53.31% | 51.16% | 48.67% | 48.80% | 48.60% | 50.67% | 50.24% | | | | | |
The following candidates were elected:[10][11]
Chiara Barchiesi (REP), 24,614 votes; María Francisca Bello (CS), 8,741 votes; Camila Flores (RN), 16,480 votes; Diego Ibáñez (CS), 34,425 votes; Andrés Longton (RN), 29,169 votes; Carolina Marzán (PPD), 33,613 votes; Gaspar Rivas (PDG), 14,851 votes; and Nelson Venegas (PS), 25,452 votes.
Results of the 2017 general election held on 19 November 2017:[12][13]
| Party | Pact | Party | Pact |
| Votes per province | Total votes | % | Seats | Votes | % | Seats |
Los Andes | Marga Marga | Petorca | Quillota | San Felipe | Valpa- raíso (part) |
| National Renewal | RN | | Chile Vamos | 7,650 | 29,615 | 4,265 | 16,758 | 8,393 | 3,201 | 69,882 | 21.99% | 3 | 123,235 | 38.77% | 4 |
| Evópoli | EVO | 3,811 | 13,456 | 3,462 | 6,482 | 5,887 | 1,352 | 34,450 | 10.84% | 1 |
| Independent Democratic Union | UDI | 2,401 | 7,044 | 2,305 | 2,908 | 2,789 | 1,456 | 18,903 | 5.95% | 0 |
| Socialist Party of Chile | PS | | Nueva Mayoría | 4,235 | 13,270 | 2,873 | 7,749 | 4,995 | 1,741 | 34,863 | 10.97% | 1 | 76,371 | 24.03% | 2 |
| Party for Democracy | PPD | 2,042 | 6,889 | 861 | 3,232 | 4,282 | 828 | 18,134 | 5.71% | 1 |
| Social Democrat Radical Party | PRSD | 2,675 | 2,077 | 682 | 3,861 | 3,430 | 482 | 13,207 | 4.16% | 0 |
| Communist Party of Chile | PC | 1,119 | 2,820 | 2,209 | 2,038 | 1,590 | 391 | 10,167 | 3.20% | 0 |
| Humanist Party | PH | | Broad Front | 2,505 | 14,385 | 848 | 3,870 | 2,282 | 901 | 24,791 | 7.80% | 1 | 52,771 | 16.60% | 1 |
| Citizen Power | PODER | 1,038 | 5,361 | 503 | 2,283 | 1,505 | 486 | 11,176 | 3.52% | 0 |
| Equality Party | IGUAL | 825 | 3,948 | 1,726 | 1,950 | 1,194 | 594 | 10,237 | 3.22% | 0 |
| Democratic Revolution | RD | 611 | 3,613 | 272 | 1,022 | 743 | 306 | 6,567 | 2.07% | 0 |
| Christian Democratic Party | PDC | | Democratic Convergence | 3,026 | 9,641 | 7,709 | 7,653 | 5,218 | 1,064 | 34,311 | 10.80% | 1 | 34,311 | 10.80% | 1 |
| Progressive Party | PRO | | All Over Chile | 3,314 | 2,981 | 699 | 2,063 | 3,269 | 428 | 12,754 | 4.01% | 0 | 12,754 | 4.01% | 0 |
| Amplitude | AMP | | Sumemos | 1,412 | 2,993 | 964 | 4,442 | 1,740 | 719 | 12,270 | 3.86% | 0 | 12,270 | 3.86% | 0 |
| Patriotic Union | UPA | | | 963 | 1,758 | 538 | 1,323 | 1,190 | 350 | 6,122 | 1.93% | 0 | 6,122 | 1.93% | 0 |
| Valid votes | 37,627 | 119,851 | 29,916 | 67,634 | 48,507 | 14,299 | 317,834 | 100.00% | 8 | 317,834 | 100.00% | 8 |
| Blank votes | 3,190 | 6,736 | 2,959 | 5,752 | 5,358 | 1,764 | 25,759 | 7.07% | | | | |
| Rejected votes – other | 2,735 | 7,062 | 1,496 | 4,497 | 3,705 | 1,292 | 20,787 | 5.70% | | | | |
| Total polled | 43,552 | 133,649 | 34,371 | 77,883 | 57,570 | 17,355 | 364,380 | 48.17% | | | | |
| Registered electors | 88,420 | 274,614 | 68,965 | 165,880 | 121,832 | 36,780 | 756,491 | | | | | |
| Turnout | 49.26% | 48.67% | 49.84% | 46.95% | 47.25% | 47.19% | 48.17% | | | | | |
The following candidates were elected:[12][13]
Camila Flores (RN), 15,283 votes; Diego Ibáñez (PH), 9,185 votes; Pablo Kast (EVO), 28,465 votes' Andrés Longton (RN), 38,874 votes; Carolina Marzán (PPD), 14,422 votes; Luis Pardo Sainz (RN), 15,725 votes; Marcelo Schilling (PS), 20,072 votes; and Daniel Verdessi (PDC), 11,571 votes.