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The study of the spectrum and structure of excited nucleon states employingthe electroproduction of exclusive reactions is an important avenue forexploring the nature of the non-perturbative strong interaction. The CLASdetector in Hall~B has provided the dominant part of the available world dataon most relevant meson electroproduction channels off the nucleon in theresonance region for $Q^2$ up to 5~GeV$^2$. Analyses of CLAS data for theexclusive channels $\pi N$, $\eta N$, and $\pi^+ \pi^- p$ on a proton targethave provided the only results available on the $Q^2$ evolution of theelectro-excitation amplitudes for the transitions from the initialphoton-proton to the final $N^*$ states in the mass range up to $W$=1.8~GeV.These electrocouplings allow for exploration of the internal structure of theproduced excited nucleon states. This work has made it clear that consistentresults from independent analyses of several exclusive channels with differentresonance hadronic decay parameters and non-resonant backgrounds but the same$N^*$ electro-excitation amplitudes, is essential to have confidence in theextracted results. Starting in early 2018, a program to study the spectrum andstructure of $N^*$ states in various exclusive electroproduction channels usingthe new CLAS12 spectrometer commenced. These studies will probe the structureof $N^*$ states in the mass range up to $W$=3~GeV and for $Q^2$ as low as0.05~GeV$^2$ and as high as 10-12~GeV$^2$, thus providing a means to access$N^*$ structure information spanning a broad range of distance scales.Quasi-real photoproduction studies are also planned to search for additional$N^*$ states, the so-called hybrid baryons, for which the glue serves as anactive structural component. In this talk the $N^*$ programs from both CLAS andCLAS12 will be reviewed.

Excited Nucleon Spectrum and Structure Studies with CLAS and CLAS12