EWK results from CMS

Results will be presented of electroweak studies with W and Z bosons using leptonic decays with data collected at a center-of-mass energy of 7 TeV by the CMS experiment at the LHC. Measurements include the inclusive W, Z and Drell Yan production differential cross sections and measurements of W and Z production in association with a photon and of di boson production. These results are interpreted in terms of constraints on anomalous triple gauge couplings. Forward backward asymmetries and charge asymmetries will be presented and also associated jet production and jet multiplicities including b-jets in association with Z bosons, and of charm-jets in association with W bosons The excellent level of theoretical and experimental understanding of these processes allows electroweak tests at the LHC at an unprecedented level of precision