Last updated on May 28th, 2025 at 09:04 am
Arquivo.pt carried out a special collection of content published online in connection with the Legislative Elections of 18 May 2025.
More than 8,000 unique pages were recorded, before and after the elections, resulting in around 250 Gigabytes of information.
This collection includes news items from the media, party websites and other citizen publications documenting this important event in Portuguese life.
The data collected is available for researchers to use in their work and projects.
Methodology for collecting the electoral event
The collection was carried out using a semi-automatic methodology that allows information to be identified and collected quickly and saves resources. The steps were as follows:
- preparation of a list of search terms;
- automatic search with the Bing Search API;
- extraction of a list of page addresses or URLs;
- recording (using Browsertrix-crawler);
- integration into Arquivo.pt;
- making the dataset available for research.
The starting point for identifying pages for this electoral event was a list of search terms, including words, names, dates, website addresses and also words in other languages. For example, we used ‘eleições’ “legislativas”, 2025, candidate names, party websites, newspaper websites and ‘eleições Portugal’ in other European languages to find foreign media pages that referred to the Portuguese elections. A total of 384 search terms were used.
The extracted addresses or URLs are then recorded, assuming that there are pages that miss the target and favouring speed, an important factor in this type of event.
A search was carried out to identify web pages before the elections and two the following week, with the corresponding recording, in order to add new content to the collection.
Finally, all the data from this special collection was published. Researchers are invited to use this information for projects or studies and to compete for the annual Arquivo.pt Award.
Legislative Elections 2025 data set
The dataset Legislative elections 2025: list of web pages with electoral content for preservation at Arquivo.pt was published at the open data Dados.gov.pt.
- Lista de termos de pesquisa (search-terms-legislativas-2025.xlsx)
- Resultados da pesquisa automática antes e depois das eleições (query-results-legislativas-2025.xlsx)
- Resultados da pesquisa automática antes das eleições (seedfile-pre-election.txt)
- Resultados da pesquisa automática depois das eleições (seedfile-post-election.txt)
Find out more about electoral recalls from previous years
- Bing Search API script
- Lists of seeds published at the open data portal Dados.gov
- 2024 European and Portuguese elections in special Arquivo.pt collections
- Collections related to elections: EAWP7, EAWP9, EAWP16 EAWP17, EAWP23, EAWP26, EAWP37, EAWP39, EAWP40, EAWP45, EAWP46
- We archived the Web pages of the Portuguese Parliamentary Elections of 2015!
- We archived the Web pages of the Portuguese Presidential Elections of 2016!
- Cross-lingual collection about the 2019 European Elections is available
- Portuguese municipal elections 2021 preserved by Arquivo.pt
- Cross-lingual research datasets on 2019 European Parliamentary Elections (Use case)
- 2019 European Parliamentary Elections – CoNLL-U texts (Use case)
- 2019 European Parliamentary Elections – Raw texts (Use case)