Daily poll data also show that Gouveia e Melo has fallen again and that Marques Mendes registered a slight rise and is drawing closer to the admiral. In addition, the gap between fifth place and first place has increased.

Technical details: Over three days (4, 5 and 6 January 2026) a minimum of 202 to 203 interviews were collected daily by Pitagórica for TVI, CNN Portugal, TSF and JN (depending on adjustments to the sample quotas) to ensure a daily subsample representative of the Portuguese electoral universe (non-probabilistic). The sampling criteria were gender, three age groups and 20 geographic strata (districts, Madeira and the Azores).

The compilation of the last three days of fieldwork produced a sample of 608 interviews which, for a confidence level of 95.5%, corresponds to a maximum margin of error of ±4.06%. Interviewees were selected by randomly generating mobile phone numbers, maintaining the proportion of the three main mobile operators.

Where necessary, landline numbers were randomly selected to support the sampling plan. Interviews were collected by telephone (CATI – Computer Assisted Telephone Interviewing). The study aims to assess Portuguese voters' opinions on issues related to the presidential elections, namely the main protagonists, moments of the campaign, as well as voting intention for the various candidates.

A total of 1,244 contact attempts were made to obtain 608 completed interviews, giving a response rate of 48.87%. The distribution of undecided voters is done proportionally. The technical direction of the study is the responsibility of Rita Marques da Silva. The full technical sheet, as well as all the results, have been deposited with the ERC – Entidade Reguladora da Comunicação Social, which will make them available for online consultation.