Populist right wing Chega supporters react during the announcement of the first electoral results at their party headquarter in Lisbon, Sunday, March 10, 2024.

Video. Centre-right and centre-left neck and neck in Portugal's tight election

Meanwhile in third place the far-right Chega (Enough) party surged in popularity. It's on course to get 18% - 11% more than in the previous election in 2022.