| 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 | 7,270 | 9.04% | 0 | 1,847 | 2.30% | 0 | 28,618 | 35.57% | 2 | | | | 18,880 | 23.47% | 1 | 9,789 | 12.17% | 0 | 12,106 | 15.05% | 0 |
| 2017 | 27,333 | 38.39% | 1 | | | | 15,957 | 22.41% | 1 | 2,416 | 3.39% | 0 | 15,164 | 21.30% | 1 | | | | | | |
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 |
| Arica | Cama- rones | General Lagos | Putre |
| Liberal Party of Chile | PL | | New Social Pact | 19,107 | 153 | 23 | 225 | 19,508 | 24.25% | 2 | 28,618 | 35.57% | 2 |
| Socialist Party of Chile | PS | 8,736 | 146 | 34 | 194 | 9,110 | 11.32% | 0 |
| Democratic Independent Regionalist Party | PRI | | Chile Podemos + | 7,047 | 90 | 26 | 157 | 7,320 | 9.10% | 1 | 18,880 | 23.47% | 1 |
| National Renewal | RN | 5,611 | 259 | 242 | 640 | 6,752 | 8.39% | 0 |
| Independent Democratic Union | UDI | 2,910 | 54 | 6 | 27 | 2,997 | 3.73% | 0 |
| Evópoli | EVO | 1,761 | 25 | 6 | 19 | 1,811 | 2.25% | 0 |
| Republican Party | REP | | Christian Social Front | 11,790 | 63 | 36 | 217 | 12,106 | 15.05% | 0 | 12,106 | 15.05% | 0 |
| Party of the People | PDG | | | 9,525 | 102 | 50 | 112 | 9,789 | 12.17% | 0 | 9,789 | 12.17% | 0 |
| Social Green Regionalist Federation | FREVS | | Apruebo Dignidad | 3,251 | 33 | 4 | 38 | 3,326 | 4.13% | 0 | 7,270 | 9.04% | 0 |
| Communist Party of Chile | PC | 3,048 | 32 | 2 | 14 | 3,096 | 3.85% | 0 |
| Comunes | COM | 826 | 8 | 6 | 8 | 848 | 1.05% | 0 |
| Humanist Party | PH | | Dignidad Ahora | 1,581 | 31 | 38 | 197 | 1,847 | 2.30% | 0 | 1,847 | 2.30% | 0 |
| Revolutionary Workers Party | PTR | | | 1,364 | 23 | 1 | 9 | 1,397 | 1.74% | 0 | 1,397 | 1.74% | 0 |
| New Time | NT | | | 526 | 6 | 0 | 14 | 546 | 0.68% | 0 | 546 | 0.68% | 0 |
| Valid votes | 77,083 | 1,025 | 474 | 1,871 | 80,453 | 100.00% | 3 | 80,453 | 100.00% | 3 |
| Blank votes | 2,030 | 33 | 22 | 61 | 2,146 | 2.50% | | | | |
| Rejected votes – other | 3,132 | 35 | 17 | 69 | 3,253 | 3.79% | | | | |
| Total polled | 82,245 | 1,093 | 513 | 2,001 | 85,852 | 44.80% | | | | |
| Registered electors | 180,736 | 3,196 | 1,948 | 5,748 | 191,628 | | | | | |
| Turnout | 45.51% | 34.20% | 26.33% | 34.81% | 44.80% | | | | | |
The following candidates were elected:[10][11]
Enrique Lee (PRI), 7,320 votes; Luis Malla (PL), 2,689 votes; and Vlado Mirosevic (PL), 16,819 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 |
| Arica | Cama- rones | General Lagos | Putre |
| Liberal Party of Chile | PL | | Broad Front | 25,205 | 386 | 103 | 363 | 26,057 | 36.60% | 1 | 27,333 | 38.39% | 1 |
| Humanist Party | PH | 896 | 12 | 6 | 13 | 927 | 1.30% | 0 |
| Equality Party | IGUAL | 325 | 7 | 5 | 12 | 349 | 0.49% | 0 |
| Socialist Party of Chile | PS | | Nueva Mayoría | 11,039 | 196 | 88 | 258 | 11,581 | 16.27% | 1 | 15,957 | 22.41% | 1 |
| Communist Party of Chile | PC | 2,545 | 34 | 13 | 38 | 2,630 | 3.69% | 0 |
| Party for Democracy | PPD | 1,129 | 93 | 87 | 437 | 1,746 | 2.45% | 0 |
| Independent Democratic Union | UDI | | Chile Vamos | 8,826 | 132 | 58 | 256 | 9,272 | 13.02% | 1 | 15,164 | 21.30% | 1 |
| Evópoli | EVO | 3,263 | 26 | 13 | 64 | 3,366 | 4.73% | 0 |
| National Renewal | RN | 1,636 | 22 | 52 | 96 | 1,806 | 2.54% | 0 |
| Independent Regionalist Party | PRI | 676 | 9 | 10 | 25 | 720 | 1.01% | 0 |
| Progressive Party | PRO | | All Over Chile | 9,977 | 109 | 49 | 193 | 10,328 | 14.51% | 0 | 10,328 | 14.51% | 0 |
| Christian Democratic Party | PDC | | Democratic Convergence | 2,232 | 60 | 59 | 65 | 2,416 | 3.39% | 0 | 2,416 | 3.39% | 0 |
| Valid votes | 67,749 | 1,086 | 543 | 1,820 | 71,198 | 100.00% | 3 | 71,198 | 100.00% | 3 |
| Blank votes | 1,581 | 34 | 34 | 83 | 1,732 | 2.31% | | | | |
| Rejected votes – other | 1,817 | 22 | 18 | 60 | 1,917 | 2.56% | | | | |
| Total polled | 71,147 | 1,142 | 595 | 1,963 | 74,847 | 40.44% | | | | |
| Registered electors | 172,372 | 4,023 | 2,421 | 6,246 | 185,062 | | | | | |
| Turnout | 41.28% | 28.39% | 24.58% | 31.43% | 40.44% | | | | | |
The following candidates were elected:[12][13]
Nino Baltolu (UDI), 9,272 votes; Vlado Mirosevic (PL), 24,273 votes; and Luis Rocafull (PS), 6,430 votes.