  The relativistic constituent quark model of low-energy quantum chromodynamics
is found to yield a consistent picture of the electroweak structure of the
nucleons. Notably, the electromagnetic and axial form factors of both the
proton and the neutron can be described in close agreement with existing
experimental data in the domain of low to moderate momentum transfers. For the
theory it is mandatory to respect Poincare invariance and to fulfill additional
conditions like charge normalization. Here we present covariant predictions of
the one-gluon-exchange and Goldstone-boson-exchange constituent quark models
for the electroweak form factors of the nucleons and give a critical discussion
of the results in view of the point-form spectator model employed for the
electromagnetic and axial current operators.
