The survey on immigration carried out by the 40dB Institute for EL PAÍS and Cadena SER and reported by El País shows striking differences between personal experience (contact with immigrants in the neighbourhood, work, leisure environment...), which is more positive, and the general perception, where it is mostly associated with negative concepts, such as insecurity. The discourse of political parties such as Vox and Se Acabó La Fiesta (SALF) resonates beyond their voters and especially among men of Generation Z (18 to 27 years old).

The survey does not show immigration as the main problem, as the CIS recently did, since inflation and the cost of living, inequalities, housing and unemployment are more worrying, but it is perceived with “great concern” by 41%, which is 16 points more than a year and a half ago.

The survey (2,000 online interviews) was carried out between 25 and 27 September. In those days, a study by the analysis centre of the European Council on Foreign Relations and the European Foundation for Culture warned of a “dangerous drift towards an ethnic conception of Europeanness” fuelled by xenophobic discourse; the Canary Islands Public Prosecutor’s Office called on the regional government to create a new protocol for the reception of unaccompanied migrant minors; The public prosecutor's office in Valencia opened an investigation against the city's second deputy mayor and spokesperson for Vox in the City Council, Juan Manuel Badenas, for falsely attributing a crime to a migrant and the PP accepted the regularisation of immigrants without a criminal record (something that was already included in previous processes) who have been in Spain since before 1 November 2021, which, according to the promoters of the popular legislative initiative that has brought the matter to Congress, makes regularisation "useless", since it is "just as demanding as the current mechanism for social roots [authorisation of residence after having remained in the country for three years]". These are the main conclusions of the 40dB study.

Concern about immigration varies according to political preferences and information channels. Seven out of ten Vox and SALF voters are "very concerned", compared to 46.4% of PP voters; 29.2% of PSOE voters; 24.1% of Sumar voters and 15.4% of Podemos voters.

59% of Spaniards consider that they have a lot or a lot of information about the phenomenon, with far-right voters being those who believe they are best informed. 71% of the general population gets their information from television and in second place (30.9%) from the newspaper.

The percentage of people who do so through social networks (26.2%) rises to 52.7% among generation Z; up to 37.8% among Vox voters and up to 57.1% among Alvise Pérez voters. The same occurs with other sources indicated, such as influencers or YouTubers (6.5 points more among those under 28 than among the general population) or WhatsApp or Telegram dissemination channels (more than 10 points difference between SALF voters and the general average).