Roldán was born in Tarragona, Catalonia, as the only child of a family of maternal Asturian and paternal Andalusian descent.
She has an uncle who was voted onto the city council for the Popular Unity Candidacy (CUP), a Catalan separatist party.
[4] In July 2019, Roldán took 86.6% of the votes in the primaries to be Cs' candidate for President of the Government of Catalonia in the 2021 Catalan regional election.
[5] In August 2020, the party's executive led by Inés Arrimadas unanimously stripped her of the candidacy and gave it to Carlos Carrizosa, with the reasoning that it wanted a candidate who had only held public office at the regional level.
[6] Roldán was the candidate for president of the Generalitat in an October 2019 motion of no confidence in incumbent Quim Torra.