  We compute the next-to-leading order corrections to the cross section for the
production of electroweak gauge bosons ($Z$, $W^\pm$ and $\gamma^*$) with large
transverse momentum in double (longitudinally) polarized hadronic collisions.
The calculation is fully performed in the HVBM scheme within dimensional
regularization with a careful treatment of issues arising due to the appearance
of $\gamma^5$ in polarization projectors and axial couplings.
  We study the phenomenological consequences of the NLO corrections at the
level of both the double polarized cross section and the corresponding
asymmetries at RHIC kinematics.
