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We discuss the results of the covariant spectator quark model for the several$\gamma^\ast N \to N^\ast$ transitions, where $N$ is the nucleon and $N^\ast$ anucleon excitation. More specifically, we present predictions for the formfactors and transition amplitudes associated with the resonances$N(1440)1/2^+$, $N(1535)1/2^-$, $N(1520)3/2^-$, $\Delta(1620)1/2^-$ and$N(1650)1/2^-$. The estimates based on valence quark degrees of freedom arecompared with the available data, particularly with the recent Jefferson Labdata at low and large momentum transfer ($Q^2$). In general, the estimates arein good agreement with the empirical data for $Q^2 >2$ GeV$^2$, with a fewexceptions. The results are discussed in terms of the role of the valencequarks and the meson cloud excitations for the different resonances $N^\ast$.We also review our results for the resonance $\Delta(1232)3/2^+$ and discussthe relevance of the pion cloud component for the magnetic dipole form factorand the electric and Coulomb quadrupole form factors.

$N^\ast$ Form Factors based on a Covariant Quark Model