An electrically conductive polymer is produced by dissolving or dispersing a monomer of an aromatic compound or a derivative thereof and an electrolyte in an organic polar medium, effecting an electrochemical, anodic oxidation in the resulting solution or dispersion, in the presence of one or more metal ions, to obtain an electrically conductive polymer, and separating the obtained polymer. The metal ion is being selected from the group consisting of a copper ion, bivalent silver ion, trivalent iron ion, trivalent manganese ion, a ruthenium ion, a rhenium ion and a rhodium ion. Films of the polymer have high conductivity.