The effects of conductive polymers on conductivities and morphologies of electrospun fabrics are analyzed. The factors that affect the conductivities and morphologies are discussed. Some applications of these conductive nanofibers are reported. The introduction of conductive polymers into nanofiber mats has the potential to provide sufficient conductivity for many applications. An improved conductivity can be achieved by maximizing the content of conjugated polymers. The selection of conductive and carrier polymers, solvents, doping agents, oxidizing agents and ratios of them are also important to obtain sufficient properties. Carbon fiber, carbon black and carbon nanotubes are not covered in this review.