lobbyist
n. countablen. someone who is paid to talk to government leaders and try to influence their decisions. They usually work for a specific group or company to help change laws.
n. a person who takes part in an organized attempt to influence legislators or government officials on behalf of a specific interest group. Often associated with corporate or non-profit advocacy.
The lobbyist met with the senator to discuss new environmental laws.
A professional lobbyist for the tech industry spent weeks explaining the benefits of the new bill to committee members.
While some view the role of a lobbyist as essential for informing policy, others argue that it grants disproportionate political power to wealthy special interest groups.
From lobby + -ist.
Often followed by the preposition 'for' to indicate the group being represented.