# 2018 Colombian parliamentary election

Parliamentary elections were held in Colombia on 11 March 2018 to elect 102 members of the Senate and 165 members of the House of Representatives.

## Electoral system

The Chamber of Representatives consisted of 172 members; 162 were elected by proportional representation from 33 multi-member constituencies based on the departments, with seats allocated using the largest remainder method. Two members were elected by the Afro-Colombian community and one by the indigenous community. Although a new constituency had been created for the Raizal minority, legislation had not been approved to allow the election to take place. A further five seats were reserved for FARC and one for the running mate of the runner-up in the presidential election as part of the Colombian peace process.
The Senate consisted of 108 members; 100 were elected a single nationwide constituency by proportional representation (with seats allocated using the largest remainder); two were elected from a two-seat constituency for indigenous Colombians; five were reserved for FARC and one for the runner-up in the presidential election.

## Candidates

* Green Alliance
* National Integration Party
* Colombian Conservative Party
* Democratic Center
* Movimiento Todos Somos Colombia
* Radical Change
* Colombian Liberal Party
* Grupo Significativo de Ciudadanos Colombia Justa Libres
* Grupo Significativo de Ciudadanos Unión con Fortaleza
* Alternative Democratic Pole
* Social Party of National Unity
* Common Alternative Revolutionary Force
* Grupo Significativo de Ciudadanos Sí Se Puede
* Independent Movement of Absolute Renovation
* Partido Somos Región Colombia
* La Lista de la Decencia [es] (Indigenous Social Alliance Movement, Unión Patriótica and Indigenous and Social Alternative Movement)

## Opinion polls

Voting intention for Senate :
| Date(s) conducted | Polling organisation/client | Sample size | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | None | Blank vote | Don't know/ No response | Margin of error |
| Date(s) conducted | Polling organisation/client | Sample size | U | CD | PCC | PLC | CR | PV | PDA | OC | MIRA | Prog | FARC | UP | Others | None | Blank vote | Don't know/ No response | Margin of error |
| 2014 Senate election results | 2014 Senate election results | 2014 Senate election results | 19.11% | 17.52% | 16.66% | 14.98% | 8.54% | 4.84% | 4.64% | 4.52% | 2.80% | — | — | — | — | | | | |
| 23–26 Nov 2017 | Cifras y Conceptos/ Red+ Noticias & Caracol Radio | 1795 | 6% | 14% | 5% | 12% | 9% | 5% | 3% | 2% | 5% | 1% | 1% | 0% | 3% | 25% | 1% | 6% | 4.5% |
| 11–14 Dec 2017 | Guarumo & EcoAnalítica/ El Tiempo & W Radio | 2352 | 4.8% | 14.2% | 3.9% | 9.5% | 4.0% | 7.0% | 3.3% | 0.8% | 2.0% | — | 1.0% | — | 2.6% | — | 27.3% | 19.6% | 4% |
| 24–28 Jan 2018 | Cifras y Conceptos/ Red+ Noticias & Caracol Radio | 2813 | 5% | 15% | 6% | 14% | 10% | 5% | 2% | 1% | 2% | 1% | 1% | 1% | 3% | 24% | 2% | 8% | 4.6% |
| 24–28 Jan 2018 | YanHaas/RCN Televisión, RCN Radio, La F.M. Radio & various newspapers | 1251 | 7% | 11% | 8% | 15% | 7% | 6% | 6% | 2% | — | — | 1% | — | — | 19% | 18% | — | 2.2% |
| 27–31 Jan 2018 | Guarumo & EcoAnalítica/ El Tiempo & W Radio | 2187 | 5.2% | 15.6% | 3.5% | 8.5% | 6.0% | 8.7% | 5.3% | 1.3% | 1.8% | — | 1.2% | — | 3.6% | — | 23.4% | 15.9% | 4% |
| 23–26 Feb 2018 | Cifras y Conceptos/ Red+ Noticias & Caracol Radio | 2960 | 5% | 17% | 6% | 12% | 10% | 4% | 5% | 3% | 3% | — | 0% | — | 35% | — | — | — | 4.5% |
| 24 Feb–1 Mar 2018 | Guarumo & EcoAnalítica/ El Tiempo & W Radio | 3425 | 4.8% | 20.1% | 5.0% | 9.9% | 8.1% | 6.1% | 4.0% | 1.8% | 1.5% | — | 0.6% | — | 7.3% | — | 16.1% | 14.7% | 2.7% |

## Results
### Senate

Seats :
| | Democratic Center | 2,501,995 | 16.39 | 19 |
| | Radical Change | 2,142,040 | 14.03 | 16 |
| | Colombian Conservative Party | 1,931,140 | 12.65 | 14 |
| | Colombian Liberal Party | 1,886,895 | 12.36 | 14 |
| | Social Party of National Unity | 1,844,847 | 12.08 | 14 |
| | Green Alliance | 1,308,208 | 8.57 | 9 |
| | Alternative Democratic Pole | 722,987 | 4.74 | 5 |
| | List of Decency Coalition (ASI–UP–MAIS) | 519,262 | 3.40 | 3 |
| | Independent Movement of Absolute Renovation | 495,506 | 3.25 | 3 |
| | Colombia Justa Libres | 463,521 | 3.04 | 3 |
| | Citizen Option | 346,398 | 2.27 | 0 |
| | Partido Somos | 102,969 | 0.67 | 0 |
| | Todos Somos Colombia | 57,465 | 0.38 | 0 |
| | Common Alternative Revolutionary Force | 55,400 | 0.36 | 5 |
| | Union for Fortaleza | 34,275 | 0.22 | 0 |
| | Si Se Puede | 13,196 | 0.09 | 0 |
| Presidential election runner-up | Presidential election runner-up | | | 1 |
| Blank votes | Blank votes | 841,212 | 5.51 | – |
| Total | Total | 15,267,316 | 100.00 | 106 |
| Valid votes | Valid votes | 15,267,316 | 88.31 | |
| Invalid votes | Invalid votes | 2,021,188 | 11.69 | |
| Total votes | Total votes | 17,288,504 | 100.00 | |
| Registered voters/turnout | Registered voters/turnout | 36,025,318 | 47.99 | |
| Indigenous seats |||||
| | Indigenous and Social Alternative Movement | 74,023 | 14.63 | 1 |
| | Indigenous Authorities of Colombia | 38,633 | 7.64 | 1 |
| | Independent Social Alliance Movement | 23,372 | 4.62 | 0 |
| | Political Sovereignty Movement | 15,927 | 3.15 | 0 |
| | Casiyouren Traditional Authority | 4,961 | 0.98 | 0 |
| | Ethnic Renovation of Colombia | 4,567 | 0.90 | 0 |
| | Indigenous Environmental Movement | 2,254 | 0.45 | 0 |
| Blank votes | Blank votes | 342,080 | 67.63 | – |
| Total | Total | 505,817 | 100.00 | 2 |
| Source: El Mundo, MOE |||||

### Chamber of Representatives

Seats :
| | Colombian Liberal Party | 2,447,298 | 16.53 | 35 |
| | Democratic Center | 2,380,290 | 16.08 | 32 |
| | Radical Change | 2,141,108 | 14.47 | 30 |
| | Social Party of National Unity | 1,824,570 | 12.33 | 25 |
| | Colombian Conservative Party | 1,802,894 | 12.18 | 21 |
| | Green Alliance | 880,354 | 5.95 | 9 |
| | Independent Movement of Absolute Renovation | 576,998 | 3.90 | 1 |
| | Alternative Democratic Pole | 438,283 | 2.96 | 2 |
| | Citizen Option | 307,478 | 2.08 | 2 |
| | List of Decency Coalition (ASI–UP–MAIS) | 260,712 | 1.76 | 2 |
| | Colombia Justa Libres | 191,109 | 1.29 | 1 |
| | AV–PDA | 173,706 | 1.17 | 0 |
| | Partido Somos | 159,967 | 1.08 | 0 |
| | Independent Social Alliance Movement | 109,258 | 0.74 | 0 |
| | Alternative Santandereana Coalition (AV–PDA–ASI) | 70,502 | 0.48 | 1 |
| | List of Decency Coalition (UP–MAIS) | 48,318 | 0.33 | 0 |
| | Indigenous and Social Alternative Movement | 43,776 | 0.30 | 1 |
| | Patriotic Union | 42,114 | 0.28 | 0 |
| | Common Alternative Revolutionary Force | 33,951 | 0.23 | 5 |
| | AV–PDA–UP | 17,732 | 0.12 | 0 |
| | Todos Somos Colombia | 16,271 | 0.11 | 0 |
| | Indigenous Authorities of Colombia | 11,082 | 0.07 | 0 |
| | ASI–AV–UP | 4,902 | 0.03 | 0 |
| | Regional Integration Movement | 3,123 | 0.02 | 0 |
| Vice-presidential runner-up | Vice-presidential runner-up | | | 1 |
| Vacant | Vacant | | | 1 |
| Blank votes | Blank votes | 815,502 | 5.51 | – |
| Total | Total | 14,801,298 | 100.00 | 169 |
| Valid votes | Valid votes | 14,801,298 | 86.95 | |
| Invalid votes | Invalid votes | 2,222,411 | 13.05 | |
| Total votes | Total votes | 17,023,709 | 100.00 | |
| Registered voters/turnout | Registered voters/turnout | 36,025,318 | 47.25 | |
| Afro-Colombian seats |||||
| | C.C. Ancestral De Comunidades Negras Playa Renaciente | 32,243 | 8.12 | 1 |
| | Consejo Comunitario La Mamuncia | 25,428 | 6.40 | 1 |
| | C.C. De La Comunidad Negra De La Plata Bahía Málaga | 17,477 | 4.40 | 0 |
| | Consejo Comunitario Del Rio Yurumangui | 14,048 | 3.54 | 0 |
| | C.C. De Comun. Negras Palenque Vda. Las Trescientas Y Mun. Galapa | 13,122 | 3.30 | 0 |
| | Consejo Comunitario Mayor De Certegui | 11,340 | 2.86 | 0 |
| | Consejo Comunitario De Alejandro Duran Diaz | 8,604 | 2.17 | 0 |
| | Todos Somos Colombia | 7,578 | 1.91 | 0 |
| | Corporación Poder Ciudadano | 7,048 | 1.78 | 0 |
| | Consejo Comunitario Renacer Negro | 6,414 | 1.62 | 0 |
| | Consejo Comunitario Bocas Del Atrato Y Leoncito | 4,219 | 1.06 | 0 |
| | Consejo Comunitario Ma Kankamana De San Basilio De Palenque | 4,179 | 1.05 | 0 |
| | C.C. De La Comunidad Negra De La Calle Larga Rio Dagua | 3,539 | 0.89 | 0 |
| | C.C. De Los Corregimientos De San Antonio Y El Castillo | 3,437 | 0.87 | 0 |
| | Consejo Comunitario Los Andes | 3,391 | 0.85 | 0 |
| | C. C. De La Comun. Negra De Tierra Baja Mi Territorio Ancestral | 3,325 | 0.84 | 0 |
| | Consejo Comunitario Veredas Unidas Un Bien Común | 3,201 | 0.81 | 0 |
| | Consejo Comunitario Imbilpi Del Carmen | 2,711 | 0.68 | 0 |
| | Consejo Comunitario De La Comunidad Negra De Limones | 2,618 | 0.66 | 0 |
| | Consejo Comunitario Tablon Salado | 2,225 | 0.56 | 0 |
| | Fund. Afrocolombiana Liberal De Desarrollo Social (Afrocodes) | 2,162 | 0.54 | 0 |
| | Kusuto Magende Cokumalu De Luruaco | 2,136 | 0.54 | 0 |
| | Consejo Comunitario De Las Baras | 1,989 | 0.50 | 0 |
| | Consejo Comunitario De Comunidades Negras Obatala | 1,766 | 0.44 | 0 |
| | Cuenca Del Rio Iscuande | 1,667 | 0.42 | 0 |
| | Org. Social De Comunidades Negras "Nelson Mandela" | 1,619 | 0.41 | 0 |
| | Consejo Comunitario De Comunidades Negras Santo Domingo | 1,505 | 0.38 | 0 |
| | C.C. General Del Río Baudó Y Sus Afluentes "Acaba" | 1,428 | 0.36 | 0 |
| Blank votes | Blank votes | 206,635 | 52.04 | – |
| Total | Total | 397,054 | 100.00 | 2 |
| Indigenous seat |||||
| | Indigenous and Social Alternative Movement | 99,182 | 25.68 | 1 |
| | Indigenous Authorities of Colombia | 45,358 | 11.75 | 0 |
| | ANICOL | 4,409 | 1.14 | 0 |
| | UAIZSACOR | 4,156 | 1.08 | 0 |
| | Taita Zipa Foundation | 2,610 | 0.68 | 0 |
| | Casiyouren Traditional Authority | 1,946 | 0.50 | 0 |
| Blank votes | Blank votes | 228,488 | 59.17 | – |
| Total | Total | 386,149 | 100.00 | 1 |
| Source: MOE, MOE |||||