EyeData Autárquicas 2021, available at https://www.eyedata.pt/eleicoes/autarquicas2021.html , will be divided into four parts: characterisation of the municipalities, real-time results and comparisons with 2017, relation of results with socioeconomic and demographics and trivia of election night.

On the site it will be possible to verify the candidates of the 308 councils of Portugal, the mandates to be assigned in the city council and in the municipal assembly and consult indicators of the municipality, such as the resident population, the number of doctors per thousand inhabitants, the retention rate of basic education or the number of registered unemployed (in % of the population between 15 and 64 years old).

The website will allow real-time monitoring of the results of elections at national and municipal levels, providing data on the number of voters, blank and null votes, as well as the results of parties, coalitions and independent movements, with indication of percentages of votes and of the number of councils won and comparison with 2017 results.

Finally, EyeData Autárquicas 2021 presents a set of curiosities, such as the municipality with the highest/lowest abstention rate, the municipalities in which the difference between the winner and the runner-up was greater, municipalities where the winner of the council is different from the winner of the municipal assembly or the best/worst results of each party.

For the information director of Lusa, Luísa Meireles, and for the head of Social Data Lab, Luís Valente Rosa, Eyedata is “an excellent work tool”, the result of a partnership between Social Data Lab and Lusa “which enriches the ability to know and understand the country, especially on the part of journalists, academics, candidates and citizens in general, curious to look deeper into the information”.

“This year, we present a renewed 'site' for local elections, where everyone can find (almost) all the information they choose to look for and the comparisons they want to make regarding these elections, exploring multiple factors, variables and curiosities at their disposal. We can also combine the election results with the 80 variables, per municipality, that we have in EyeData”.

In Portugal there are 308 municipalities, of which 278 are on the mainland, 19 in the Azores and 11 in Madeira. As for parishes, there are 3,092, with the following distribution: 2,882 on the mainland, 156 on the Azores and 54 on Madeira.

In the municipal elections on September 26, a total of 2,064 seats in municipal chambers and 6,448 seats in municipal assemblies are up for grabs.

The first municipal elections in democracy took place in December 1976.