  We discuss the viability of shocks as the principal source of ionization for
the Narrow Line Region of Seyfert galaxies. We present the preliminary results
of [OIII]5007A and radio 3.6 cm imaging surveys of Seyferts, discuss the
effects of shocks in the ionization of two galaxies, and also calculate an
upper limit to the Hbeta luminosity that can be due to shocks in 36 galaxies
with unresolved radio emission. We show that, for favored values of the shock
parameters, that shocks cannot contribute more than ~15% of the ionizing
photons in most galaxies.
