  The leading hadronic effects in electroweak theory derive from vacuum
polarization which are non-perturbative hadronic contributions to the running
of the gauge couplings, the electromagnetic alpha_{em}(s) and the SU(2)_L
coupling alpha_2(s). I will report on my recent package "alphaQED", which
besides the effective fine structure constant alpha_{em}(s) also allows for a
fairly precise calculation of the SU(2)_L gauge coupling alpha_2(s). I will
briefly review the role, future requirements and possibilities. Applied
together with the "Rhad" package by Harlander and Steinhauser, the package
allows to calculate all SM running couplings as well as running sin^2 Theta
versions with state-of-the-art accuracy.
