What are tracking polls? They are not daily polls: it's like watching "television ratings — they vary every day and you can see a trend", explains António Gomes, managing director of GfK-Metris

In this May 2025 episode of Perguntar Não Ofende, ahead of this year's legislative elections, Daniel Oliveira spoke with António Gomes, managing director of GfK-Metris and a specialist with three decades of experience in opinion research. Revisit the conversation here about polls and tracking polls.