  The influence of nucleon-nucleon short-ranged correlations (SRC) on nuclear
super-allowed $\beta$ decay is examined. The need for this is driven by the
observed depletion of spectroscopic strength obtained in studies of $(e,e')$
and $(d,^3{\rm He})$ reactions on a wide variety of nuclei. We show that the
influence of SRC is model-dependent, but may be very substantial.
  The $^{46}$V nucleus is used as an example. The resulting impact on studies
of the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element is
discussed.
