  We summarize the status of calculations of the electroweak radiative
corrections to W and Z boson production via the Drell-Yan mechanism at hadron
colliders. To fully exploit the precision physics potential of the
high-luminosity environment of the Fermilab Tevatron pbar p (Run II) and the
CERN LHC pp colliders, it is crucial that the theoretical predictions are well
under control. The envisioned precision physics program includes a precise
measurement of the W boson mass and width, and the (leptonic) weak mixing
angle, as well as probing the Standard Model (SM) of electroweak interactions
at the highest accessible center-of-mass energies. Some numerical results are
presented.
