A continuum theory of the rotational motion of a uniformly charged solute molecule in a polar solvent which takes into account dielectric friction, dielectric saturation, and spatial dependence of the solvent viscosity due to electrostriction is developed. The results are obtained from the solution of the generalized electrohydrodynamic equations for rotational motion. We observe that both dielectric saturation and dielectric friction have a strong impact on the rotational dynamics of the solute, while the effect of the local enhancement of the viscosity is not of the same importance.