A research project that explores the relationship between crisis, polarization and federalism (FEDCRISIS). The project is headed by Amuitz Garmendia and Sandra León (Department of Social Sciences and Carlos III-Juan March Institute, IC3JM). The research team includes Pablo Beramendi (Duke University), Berta Barbet (Institut d’Estudis de l’Autogovern), Elias Dinas (European University Institute) and Manuel Sola (European University Institute). The project is funded by the Spanish State Research Agency (AEI, Reference: PID2021-128287NB-I00).