  We discuss the relation of the Kerr-Newman spinning particle to the Dirac
electron and show that the Dirac equation may naturally be incorporated into
Kerr-Schild formalism as a master equation controlling the Kerr-Newman
geometry. As a result, the Dirac electron acquires an extended space-time
structure of the Kerr-Newman geometry - singular ring of the Compton size and
twistorial polarization of the gravitational and electromagnetic fields.
  Behavior of this Dirac -- Kerr-Newman system in the weak and slowly changed
electromagnetic fields is determined by the wave function of the Dirac
equation, and is indistinguishable from the behavior of the Dirac electron. The
wave function of the Dirac equation plays in this model the role of an ``order
parameter'' which controls dynamics, spin-polarization and twistorial structure
of space-time.
