  We study the conditions for stability of electrically charged, non-conductive
perfect fluid tori with respect to linear perturbations. To this end we employ
Lagrangian perturbation formalism and we assume a system where the fluid orbits
a central body. Gravitational field of the latter is described in the Newtonian
framework. We first formulate the criteria valid for a general,
non-axisymmetric situation, and then we concentrate on the axisymmetric model
in more detail. In the latter case we generalize the H{\o}iland criterion of
stability to non-vanishing electric charge and classify special examples.
Toroidal structures with constant angular momentum distribution are found to be
linearly stable. Subsequently, like in the uncharged case, rotating charged
fluids are found to be unstable with respect to non-axisymmetric perturbations.
