Preliminary electroweak results are discussed from the Fermilab experiments, CDF and D0, based on Tevatron run 1b data. These include an updated precision measurement of the W mass which when combined with previous Tevatron, CERN Spbar pS, and LEP-II results gives a combined world average M_W = 80.40 +/- 0.08 GeV/c^2. Also presented are new limits on anomalous gauge boson self-couplings, measurement of the W charge asymmetry, sigma . B(W -> tau nu_tau), and limits on quark/lepton compositeness from high mass Drell-Yan production.