  The recent results on $\gamma_vpN^*$ electrocouplings from analyses of the
data on exclusive meson electroproduction off protons measured with the CLAS
detector at Jefferson Lab are presented. The impact of these results on the
exploration of the excited nucleon state structure and non-perturbative strong
interaction dynamics behind its formation is outlined. The future extension of
these studies in the experiments with the CLAS12 detector in the upgraded
Hall-B at JLab will provide for the first time $\gamma_vpN^*$ electrocouplings
of all prominent resonances at the still unexplored distance scales that
correspond to extremely low (0.05 GeV$^2 < Q^2 <$ 0.5 GeV$^2$) and the highest
photon virtualities (5.0 GeV$^2 < Q^2 <$ 12.0 GeV$^2$) ever achieved in the
exclusive electroproduction measurements. The expected results will address the
most important open problems of the Standard Model: on the nature of more than
98\% of hadron mass, quark-gluon confinement and emergence of the excited
nucleon state structure from the QCD Lagrangian, as well as allowing a search
for the new states of hadron matter predicted from the first principles of QCD,
the so-called hybrid baryons.
