The nickel(II) complex with H(2)saltMe, a N2O2 Schiff base ligand derived from salicylaldehyde, was oxidatively electropolymerized on Pt electrodes in CH3CN/0.1 mol dm(-3) tetraethylammonium perchlorate (TEAP) to generate polymer films that exhibit reversible oxidative electrochemical behavior in a wide potential range (0.0-1.3 V), high conductivity, and stability/durability. The films of poly[Ni(saltMe)] can be made to exhibit the three regimes of charge transport behavior by manipulation of the film thickness and the experimental time scale, Films prepared by a small number of potential cycles show thin-layer/surface-type cyclic voltammetry behavior in the scan rate range used. Thicker polymers exhibit a changeover from this thin-layer regime to diffusion control at a critical scan rate that depends on film thickness. In chronoamperometry experiments a transition from semiinfinite diffusion to finite diffusion conditions was observed at longer times following the potential step. Values of (DC)-C-1/2 for the second electrochemical stage of film oxidation redox obtained from both techniques were in good agreement. A comparison of the values for oxidative and reductive electrochemical reactions suggests that ingress of counterions and solvent swelling must occur predominantly up to 0.8V in the positive going potential scan.