A ganging tool for adjusting the position of a pair of ganged wiring devices such as duplex receptacles, toggle, and decorator type switches on a mounting, e.g., an electrical box. The ganging tool has a frame having a pair of apertures for receiving different kinds of wiring devices and holding them in place while the ganging tool adjusts the position of the wiring devices. The ganging tool also has rotatable toggle adaptors that allow the ganging tool to be used to position both toggle type wiring devices and non-toggle type wiring devices. The ganging tool further has a leveling means for determining the level of the wiring devices. Also, tool cutouts on the frame of the ganging tool allow the ganging tool to be used with power tools in conjunction with positioning and affixing wiring devices on a mounting.