During the nineteenth century, one way political bosses gained voter support 5 points was by - campaigning for women's suffrage advocating the use of poll taxes making improvements in urban infrastructure providing public assistance for format slaves

The correct answer is: making improvements in urban infrastructure.<br /><br />During the nineteenth century, political bosses often gained voter support by making improvements in urban infrastructure. This included building roads, bridges, parks, and other public facilities that benefited the local community. By improving the infrastructure, political bosses were able to demonstrate their commitment to the needs and well-being of their constituents, which helped them secure votes and maintain political power.