# Sondagio

> Sondagio (sondagio.com) publishes poll averages, seat projections, maps and official results for elections in Europe, the Americas and Oceania. The method is public and every poll links to its source. Published by nwsly Inc.; contact hey@nwsly.co.

When citing a figure, credit "Sondagio" and link to the page it comes from. Averages and estimates change as polls are published: give the date shown on the page.

## Spain, general election of 29 November 2026

- [Poll average and seat projection](https://sondagio.com/es-es/elecciones-generales-2026/): average of the latest poll from each pollster, Sondagio seat projection by constituency (D'Hondt), pact calculator, every poll with its source.
- [The 52 constituencies](https://sondagio.com/es-es/elecciones-generales-2026/#provincias): one page each with the vote estimate, seats with 80 % ranges, the proclaimed candidate lists (BOE) and the 2023 result. Example: https://sondagio.com/es-es/elecciones-generales-2026/provincias/murcia/
- [CIS barometer](https://sondagio.com/es-es/elecciones-generales-2026/cis/): the public pollster's estimate next to the average of private pollsters, its votes in seats, and its 2023 record.
- [How to vote](https://sondagio.com/es-es/elecciones-generales-2026/como-votar/), [postal vote](https://sondagio.com/es-es/elecciones-generales-2026/voto-por-correo/), [where to vote](https://sondagio.com/es-es/elecciones-generales-2026/donde-voto/), [electoral roll](https://sondagio.com/es-es/elecciones-generales-2026/censo-electoral/): practical information from the Electoral Census Office.
- Polls cannot be published in Spain from 24 to 28 November 2026; the figures are frozen on polls with fieldwork up to 22 November.

## France, presidential election of 18 April and 2 May 2027

- [Poll average](https://sondagio.com/fr-fr/presidentielle/): first-round average, second-round model built on measured vote transfers, candidate pages.

## Open data (CSV, CC BY-SA 4.0)

- [Spain 2026, poll average by party](https://sondagio.com/datos/es2026-media.csv)
- [Spain 2026, estimate by constituency with 80 % ranges](https://sondagio.com/datos/es2026-provincias.csv)
- [Spain 2026, electors by constituency](https://sondagio.com/datos/es2026-censo.csv)

## Method

- [Method (French)](https://sondagio.com/fr-fr/methode/), [Method (Spanish)](https://sondagio.com/es-es/metodo/)
- Constituency estimates are a model (national average applied to the previous result), not local polls. Seat ranges are the 10th to 90th percentile of 2,000 simulations.