Metal-free organic redox mediators, whose redox potentials can be tuned according to the intended enzyme system and application, are emerging as alternative mediators for the design of improved enzyme-based biosensors and biofuel cells. We report a novel class of metal-free redox polymer containing a polymer-tethered dicyano viologen mediator for the immobilization of FAD-dependent glucose dehydrogenase (FAD-GDH) on graphite electrodes. Incorporation of strong electron-withdrawing cyano groups to the viologen moiety ensures the formation of high potential viologen-based redox polymer with an envisaged pH-independent redox potential close to 50 mV (vs Ag /AgCl/ 3 M KCl) and a negligible impact on oxygen reduction. The bioelectrode comprising of newly designed redox polymer and FAD-GDH showed enhanced electrocatalytic activity in the presence of glucose, confirming effective wiring of FAD-GDH, if embedded within the redox polymer.