Final answer:
Professional advocacy groups representing state and local governing bodies are known as intergovernmental lobbies. They engage in advocacy to influence policies, exchange information, and mobilize support for issues relevant to state or local government interests.
Step-by-step explanation:
Professional advocacy groups that represent various state and local governing bodies are known as intergovernmental lobbies. These groups, such as the National League of Cities, work within the intergovernmental lobby to influence policies and budget allocations favorable to their interests. They come together in organizations like the National Governors Association or the U.S. Conference of Mayors to exchange information and express collective concerns to the national government.
Intergovernmental lobbying is a form of advocacy where government entities lobby for policy changes or funding increases that would benefit state or local governments. They may seek to influence legislative decisions by providing information, suggesting policy items, or mobilizing constituents to act. Lobbyists from these groups will communicate with federal agencies, executive appointees, congressional committees, and even the White House to promote their interests.