Speaker: Gilberto Ramalho (Jefferson lab/CFTP-Instituto Superor Tecnico) Title: A covariant model for the nucleon and the Delta Abstracr: A covariant model for the nucleon and Delta wave function based in Spectator formalism is presented. In first approach we consider S-state wave functions for the quark-diquark system. Electromagnetic form factors are evaluated and compared with the data.