Defines every variable in the v3.0 dataset, organized by category. Covers electoral structure, party system indicators, disproportionality, ideological measures, and demographics, including the additions for the 2024 municipal and regional elections and the 2025 parliamentary election.

Documents the differences between version 2.0 and version 3.0. Adds 818 new rows from the 2024 municipal and regional elections and the 2025 parliamentary election, bringing the total to 6,119 observations. Also documents an ideological-scores correction affecting 2,657 existing rows and one row-level fix in the 2021 Gobernador second-round data.

Methodological decisions, source-data problems, and edge cases that may affect interpretation or distort user calculations. Carries forward all prior notes and adds issues specific to the 2024 and 2025 election rows. Read before computing aggregates.

Recommended citation format for the dataset and accompanying publication. Includes BibTeX entries and DOI links for both the Harvard Dataverse deposit and the Humanities and Social Sciences Communications article. Use when publishing research.

Defines every variable in the dataset, organized by category. Covers electoral structure, party system indicators, disproportionality, ideological measures, and demographics. Includes measurement protocols and source attribution for each column.

Documents the differences between version 1.0 and version 2.0. Version 2.0 is a metadata-only release with no changes to observations or variable values. Lists all carry-forward notes and refinements to documentation between releases.

Methodological decisions, source-data problems, and edge cases that may affect interpretation or distort user calculations. Covers IFP exclusion, region assignments, tie-breaking rules, and missing data flags. Read before computing aggregates.

Citation format for the v2.0 release. Use this when replicating analyses based on that version. For new research, prefer the v3.0 citation file since it reflects the most recent release.

Variable definitions for the initial release of the dataset, organized by category. Covers electoral structure, party system, disproportionality, ideological, and demographic measures. Superseded by v2.0 but preserved for replication purposes.

Release notes for the v1.0 publication on 2025-11-05. Documents the scope, coverage, and design decisions of the original dataset across legislative, regional, municipal, and constitutional convention elections. Useful for replicating analyses based on the original release.

Original methodological notes published with v1.0. All notes documented here remain fully applicable to v2.0 since the underlying dataset values are unchanged. Provides full text of every cautionary note carried forward into later versions.

Citation format for the v1.0 release. Use this when replicating analyses based on the original publication. For new research, prefer the v3.0 citation file since it reflects the most recent release.