To govern Barcelona, ​​it will be essential to forge alliances and it is quite probable that the sum of two political formations will not be enough to reach an absolute majority, which in the City Council of the Catalan capital is fixed at 21 of the 41 councilors that the people of Barcelona will elect next 28 of May. Given this perspective, La Vanguardia and Public Affairs Experts make available to the users of the website of this newspaper a new interactive, the pactometer, which allows them to forecast the results of the next elections and, based on them, establish the sums of in order to define possible government pacts.

The interactive allows you to combine the bets of the possible results of the candidates of the political formations that, according to the surveys published since the beginning of this year by the different media, have options to exceed the bar of 5% of the votes cast and Consequently, obtain representation in the municipal plenary session that will be constituted after the elections.

In order to be able to participate with greater knowledge of the facts in this game of alliances, some reference values ​​have been included with the average of the polls that have been published since last January 1.

These surveys assign the candidacy headed by the former mayor of Barcelona, ​​Xavier Trias, 10 councillors, the same as number one on the PSC list, Jaume Collboni. Next, hot on their heels, the polls place the current mayoress and BComú candidate, Ada Colau, with 9 councilors.

A little further from first place appears the candidate for mayor for Esquerra Republicana de Catalunya and winner of votes in the 2019 local elections, Ernest Maragall, with 7 councillors. Always according to the average of the polls published, the fifth formation that would obtain representation in the City Council would be the Popular Party, with 3 councillors. On the edge of 5% and getting into the Consistory would be the CUP, which in this case would place its first two candidates in the municipal plenary session.

With these benchmark results, no combination of two candidacies would reach an absolute majority of 21 councillors. The one that would stay closest is the sum of Junts and the PSC, which would stay just one councilor from that brand. The reissue of the government pact of the current term between socialists and commoners would add 19 councilors, one more than at present.

If the forecasts set out in the polls are met, in order to govern the city of Barcelona with an absolute majority for the next four years, an alliance of three formations would be necessary. Discarded the options without any ideological affinity, the clearest in this sense would be the one formed by the PSC, BComú and ERC, which would add up to a total of 26 of the 41 councilors at stake.