Good practice

Ecuador's 'Paridad y Alternancia' Electoral Reform — Mandatory 50/50 Alternating Gender Parity in All Candidate Lists (2020)

Ecuador · Quito · See the Ecuador profile

Ecuador's 2020 electoral reform mandated 50/50 alternating gender parity in all candidate lists. Women in the National Assembly rose from ~30% pre-reform to 39.4% in 2021 and 43.1% in 2023; President Noboa's 2024 cabinet reached 47% women.

~30% → 39.4%

Women in the National Assembly (to 2021)

43.1%

Women in the National Assembly (2023)

Ecuador's 'Paridad y Alternancia' Electoral Reform — Mandatory 50/50 Alternating Gender Parity in All Candidate Lists (2020)

Details

Maturity: Established
Promoter: Asamblea Nacional del Ecuador / Consejo Nacional Electoral
Period: 2020–present
Keywords: government, electoral reform, political representation, gender mainstreaming

Context

Ecuador's 2020 electoral reform (Ley Orgánica Reformatoria al Código de la Democracia) mandated 50/50 alternating gender parity on all candidate lists.

Results

Women's share of the National Assembly rose from about 30% before the reform to 39.4% in 2021 and 43.1% in 2023, and the 2024 cabinet reached 47% women.

Implementation

Implementation detail (cost, timeline, staffing, conditions for success) is not yet available for this practice.

Data sources

Where this practice's information was retrieved from, and when.

C-NAPSE web research — accessed 2026-06-23
Asamblea Nacional del Ecuador / Consejo Nacional Electoral — accessed 2026-06-23
SciELO peer-reviewed evaluation (2023) — accessed 2026-06-23
IPU Parline — Ecuador National Assembly data on women — accessed 2026-06-23
UN Women Ecuador — Democracia Paritaria — accessed 2026-06-23
NDI — Advocating for Women's Political Participation in Ecuador — accessed 2026-06-23
IFES — Stronger Together: Women and Men Unite for Equality in Ecuador's Political Parties — accessed 2026-06-23

Attachments

Source image

Quality score: 96/100

How is this calculated?

Evidence: Observational / pre–post

Top 4% in this catalogue (719 scored practices)

Scores cluster high, so position within the catalogue is often more telling than the number alone.

Evaluation

Evaluated by C-NAPSE

Score profile — the dimensions behind the score — how it's computed

Transferability / replicability2/3

The alternating-parity list model has been replicated across Latin America (Bolivia, Chile, Costa Rica, Mexico), but odd-numbered districts require adaptation — limiting score to 2.

Impact on gender equality1/1

Women's share of National Assembly seats rose from ~30% to 43.1% (2023) per IPU Parline, a 13-percentage-point gain over two electoral cycles.

Effectiveness1/1

Parity lists raised representation above historical norms in both 2021 and 2023, though structural odd-district effects prevented full 50% parity from translating to 50% elected.

Efficiency1/1

A single Electoral Code amendment produced a 13 pp representation gain at near-zero direct cost — among the most cost-effective gender interventions documented in Latin America.

Evaluated outcomes1/1

A 2023 peer-reviewed SciELO study provides regression analysis of the reform's descriptive representation impact, corroborated by UN Women Ecuador and IFES monitoring.

Sustainability1/1

The parity requirement is constitutionally embedded and was reaffirmed by the National Assembly in 2022; gains held and improved in the 2023 elections.

Achievement / evidence1/1

IPU Parline confirms 43.1% women in National Assembly in 2023, the highest in Ecuador's history; Noboa cabinet at 47% in 2024.

Gender-mainstreaming embedding1/1

Parity and alternation apply at all electoral levels — national, provincial, cantonal and parochial — embedding gender equality throughout the entire political system.

Curator validation1/1

Multiple independent sources (SciELO, UN Women Ecuador, IPU Parline, IFES, NDI) corroborate both the reform mechanism and its measured outcomes.

Cite this

Evidoria. Ecuador's 'Paridad y Alternancia' Electoral Reform — Mandatory 50/50 Alternating Gender Parity in All Candidate Lists (2020). Persistent ID: ef77cb61-d074-45ff-93d3-ce5a7eef965f.

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