| Election | Apruebo Dignidad AD / FA | Green Ecologists PEV | 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 | Votes | % | Seats |
| 2021 | 115,106 | 24.48% | 2 | 43,186 | 9.19% | 1 | 15,932 | 3.39% | 0 | 55,241 | 11.75% | 1 | | | | 86,877 | 18.48% | 2 | 39,270 | 8.35% | 1 | 51,042 | 10.86% | 1 |
| 2017 | 95,195 | 22.45% | 2 | | | | | | | 88,137 | 20.78% | 2 | 46,479 | 10.96% | 1 | 164,734 | 38.85% | 3 | | | | | | |
Results of the 2021 general election held on 21 November 2021:[10][11]
| Party | Pact | Party | Pact |
| Votes per commune | Total votes | % | Seats | Votes | % | Seats |
Cerril- los | Colina | Esta- ción Central | Lampa | Maipú | Puda- huel | Quili- cura | Tiltil |
| Communist Party of Chile | PC | | Apruebo Dignidad | 3,660 | 3,009 | 7,707 | 2,734 | 25,453 | 10,133 | 9,266 | 799 | 62,761 | 13.35% | 1 | 115,106 | 24.48% | 2 |
| Comunes | COM | 1,708 | 1,253 | 2,990 | 1,587 | 16,901 | 4,332 | 3,460 | 340 | 32,571 | 6.93% | 1 |
| Democratic Revolution | RD | 1,090 | 822 | 1,368 | 725 | 8,299 | 2,380 | 2,358 | 174 | 17,216 | 3.66% | 0 |
| Social Green Regionalist Federation | FREVS | 135 | 115 | 189 | 102 | 1,251 | 395 | 347 | 24 | 2,558 | 0.54% | 0 |
| Independent Democratic Union | UDI | | Chile Podemos + | 2,455 | 10,450 | 5,163 | 2,707 | 19,271 | 6,536 | 5,761 | 841 | 53,184 | 11.31% | 2 | 86,877 | 18.48% | 2 |
| National Renewal | RN | 1,095 | 3,641 | 1,905 | 1,310 | 7,573 | 2,536 | 2,332 | 291 | 20,683 | 4.40% | 0 |
| Evópoli | EVO | 2,067 | 2,794 | 928 | 553 | 4,634 | 1,104 | 844 | 86 | 13,010 | 2.77% | 0 |
| Christian Democratic Party | PDC | | New Social Pact | 950 | 1,268 | 1,383 | 1,860 | 12,798 | 1,852 | 1,941 | 174 | 22,226 | 4.73% | 1 | 55,241 | 11.75% | 1 |
| Liberal Party of Chile | PL | 625 | 841 | 1,245 | 533 | 6,000 | 1,704 | 1,412 | 137 | 12,497 | 2.66% | 0 |
| Socialist Party of Chile | PS | 433 | 347 | 4,222 | 298 | 2,039 | 2,914 | 576 | 62 | 10,891 | 2.32% | 0 |
| Party for Democracy | PPD | 347 | 305 | 570 | 275 | 2,308 | 3,136 | 853 | 69 | 7,863 | 1.67% | 0 |
| Radical Party of Chile | PR | 144 | 140 | 228 | 103 | 548 | 261 | 242 | 98 | 1,764 | 0.38% | 0 |
| Republican Party | REP | | Christian Social Front | 3,162 | 6,971 | 5,330 | 3,104 | 18,944 | 6,959 | 5,981 | 591 | 51,042 | 10.86% | 1 | 51,042 | 10.86% | 1 |
| Green Ecologist Party | PEV | | | 2,289 | 2,315 | 3,362 | 1,990 | 21,018 | 5,621 | 6,069 | 522 | 43,186 | 9.19% | 1 | 43,186 | 9.19% | 1 |
| Party of the People | PDG | | | 2,342 | 2,585 | 2,934 | 2,858 | 14,362 | 6,667 | 6,892 | 630 | 39,270 | 8.35% | 1 | 39,270 | 8.35% | 1 |
| Cesar Leiva Rubio (Independent) | Ind | | | 2,049 | 2,363 | 3,166 | 2,503 | 12,910 | 5,439 | 5,780 | 562 | 34,772 | 7.40% | 0 | 34,772 | 7.40% | 0 |
| Humanist Party | PH | | Dignidad Ahora | 656 | 534 | 787 | 357 | 2,715 | 1,420 | 2,000 | 87 | 8,556 | 1.82% | 0 | 15,932 | 3.39% | 0 |
| Equality Party | IGUAL | 370 | 335 | 704 | 298 | 2,090 | 2,669 | 817 | 93 | 7,376 | 1.57% | 0 |
| United Centre | CU | | United Independents | 613 | 676 | 964 | 578 | 3,355 | 1,622 | 1,452 | 116 | 9,376 | 1.99% | 0 | 9,376 | 1.99% | 0 |
| Patriotic Union | UPA | | | 517 | 523 | 783 | 449 | 2,786 | 1,507 | 1,029 | 124 | 7,718 | 1.64% | 0 | 7,718 | 1.64% | 0 |
| Revolutionary Workers Party | PTR | | | 385 | 463 | 649 | 370 | 1,828 | 1,269 | 956 | 93 | 6,013 | 1.28% | 0 | 6,013 | 1.28% | 0 |
| Progressive Party | PRO | | | 311 | 353 | 501 | 451 | 2,011 | 1,085 | 806 | 65 | 5,583 | 1.19% | 0 | 5,583 | 1.19% | 0 |
| Valid votes | 27,403 | 42,103 | 47,078 | 25,745 | 189,094 | 71,541 | 61,174 | 5,978 | 470,116 | 100.00% | 8 | 470,116 | 100.00% | 8 |
| Blank votes | 1,732 | 2,736 | 3,073 | 1,848 | 8,796 | 4,789 | 3,972 | 661 | 27,607 | 5.25% | | | | |
| Rejected votes – other | 1,799 | 2,231 | 2,996 | 1,527 | 9,844 | 4,634 | 4,284 | 538 | 27,853 | 5.30% | | | | |
| Total polled | 30,934 | 47,070 | 53,147 | 29,120 | 207,734 | 80,964 | 69,430 | 7,177 | 525,576 | 49.20% | | | | |
| Registered electors | 66,557 | 94,052 | 125,639 | 62,829 | 392,526 | 169,810 | 141,793 | 14,962 | 1,068,168 | | | | | |
| Turnout | 46.48% | 50.05% | 42.30% | 46.35% | 52.92% | 47.68% | 48.97% | 47.97% | 49.20% | | | | | |
The following candidates were elected:[10][11]
Viviana Delgado (PEV), 20,140 votes; Carmen Hertz (PC), 48,981 votes; Cristián Labbé (UDI), 11,787 votes; Joaquín Lavín (UDI), 33,067 votes; Claudia Mix (COM), 24,375 votes; Rubén Darío Oyarzo (PDG), 6,953 votes; Agustín Romero (REP), 17,173 votes; and Alberto Undurraga (PDC), 17,158 votes.
Results of the 2017 general election held on 19 November 2017:[12][13]
| Party | Pact | Party | Pact |
| Votes per commune | Total votes | % | Seats | Votes | % | Seats |
Cerril- los | Colina | Esta- ción Central | Lampa | Maipú | Puda- huel | Quili- cura | Tiltil |
| Independent Democratic Union | UDI | | Chile Vamos | 5,709 | 10,820 | 10,165 | 4,747 | 46,808 | 13,741 | 10,821 | 1,373 | 104,184 | 24.57% | 2 | 164,734 | 38.85% | 3 |
| National Renewal | RN | 3,400 | 4,584 | 4,210 | 2,445 | 12,209 | 4,441 | 4,175 | 401 | 35,865 | 8.46% | 1 |
| Independent Regionalist Party | PRI | 1,517 | 5,103 | 2,420 | 1,522 | 8,284 | 3,044 | 2,270 | 525 | 24,685 | 5.82% | 0 |
| Citizen Power | PODER | | Broad Front | 1,619 | 939 | 2,198 | 919 | 20,556 | 3,887 | 3,199 | 303 | 33,620 | 7.93% | 1 | 95,195 | 22.45% | 2 |
| Democratic Revolution | RD | 1,491 | 1,035 | 2,740 | 873 | 10,511 | 4,079 | 3,120 | 213 | 24,062 | 5.67% | 1 |
| Humanist Party | PH | 1,233 | 753 | 4,260 | 818 | 6,540 | 3,111 | 2,744 | 161 | 19,620 | 4.63% | 0 |
| Green Ecologist Party | PEV | 1,060 | 816 | 1,683 | 839 | 7,747 | 2,964 | 2,622 | 162 | 17,893 | 4.22% | 0 |
| Social Democrat Radical Party | PRSD | | Nueva Mayoría | 3,927 | 980 | 5,539 | 923 | 15,381 | 2,323 | 1,768 | 156 | 30,997 | 7.31% | 1 | 88,137 | 20.78% | 2 |
| Communist Party of Chile | PC | 1,927 | 771 | 4,847 | 893 | 11,616 | 3,626 | 4,126 | 366 | 28,172 | 6.64% | 1 |
| Socialist Party of Chile | PS | 1,489 | 1,196 | 2,394 | 921 | 6,500 | 8,165 | 1,811 | 238 | 22,714 | 5.36% | 0 |
| Party for Democracy | PPD | 303 | 218 | 537 | 278 | 2,118 | 745 | 1,966 | 89 | 6,254 | 1.47% | 0 |
| Christian Democratic Party | PDC | | Democratic Convergence | 2,080 | 4,261 | 3,852 | 3,342 | 11,566 | 9,601 | 10,653 | 1,124 | 46,479 | 10.96% | 1 | 46,479 | 10.96% | 1 |
| Progressive Party | PRO | | All Over Chile | 1,428 | 1,344 | 2,243 | 1,081 | 7,217 | 3,948 | 2,300 | 351 | 19,912 | 4.70% | 0 | 19,912 | 4.70% | 0 |
| Patriotic Union | UPA | | | 715 | 577 | 1,039 | 534 | 3,476 | 1,751 | 1,323 | 177 | 9,592 | 2.26% | 0 | 9,592 | 2.26% | 0 |
| Valid votes | 27,898 | 33,397 | 48,127 | 20,135 | 170,529 | 65,426 | 52,898 | 5,639 | 424,049 | 100.00% | 8 | 424,049 | 100.00% | 8 |
| Blank votes | 2,001 | 2,168 | 3,154 | 1,722 | 9,124 | 4,967 | 3,524 | 525 | 27,185 | 5.63% | | | | |
| Rejected votes – other | 1,991 | 1,845 | 3,721 | 1,505 | 12,122 | 5,535 | 4,342 | 455 | 31,516 | 6.53% | | | | |
| Total polled | 31,890 | 37,410 | 55,002 | 23,362 | 191,775 | 75,928 | 60,764 | 6,619 | 482,750 | 48.04% | | | | |
| Registered electors | 67,804 | 79,070 | 126,168 | 49,911 | 376,042 | 163,680 | 128,414 | 13,799 | 1,004,888 | | | | | |
| Turnout | 47.03% | 47.31% | 43.59% | 46.81% | 51.00% | 46.39% | 47.32% | 47.97% | 48.04% | | | | | |
The following candidates were elected:[12][13]
Pepe Auth (PRSD), 26,839 votes; Mario Desbordes (RN), 17,799 votes; Carmen Hertz (PC), 16,035 votes; Joaquín Lavín (UDI), 75,973 votes; Patricio Melero (UDI), 23,042 votes; Claudia Mix (PODER), 20,958 votes; Gabriel Silber (PDC), 29,205 votes; and Pablo Vidal (RD), 12,135 votes.