Here, the authors have directly shown that the ground state density is modified by mixing with excited electronic states and adopting their character via coupling through the cavity. Similarly, in Fig. , the ground/excited state density difference can be plotted (∆ρ(z) = ρ E.S. (z)ρ G.S. (z)) to showcase the effects of the cavity on the exited state character with respect to the polaritonic ground state. Here, the charge displacement is seen moving from the donor (NO 2 ) to the acceptor (NH 2 ) species with a magnitude of -0.4 |e|. The upper (red) and lower polaritons (blue) observe different amounts of charge displacement, but the sum of the two (dashed black) nearly reproduce the original bare molecular ground/excited density difference (green). In this analysis, one can investigate the distribution of charge between the ground and excited states inside and outside of the cavity for effects on the electrical current in materials and for reactivity in the excited state and will have direct application to the design of photo-voltaic technologies. 100