Electroweak measurements with the CMS experiment

The CMS Collaboration pursues a rich program of electroweak measurements using the W and Z particles. Its latest results are presented using the data collected at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of almost 20 fb$^{-1}$. The cross-sections of electroweak $\ell\ell jj$ and $\ell\nu jj$ production and the properties of the additional jets in the event are measured. The forward-backward asymmetry and angular coefficients in Drell-Yan $\ell\ell$ production, as well as the transverse momentum distribution of the W and Z bosons are studied and compared to theoretical calculations. The charge asymmetry in $W$ production is determined and used to constrain the parton distribution functions of light quarks.