A lobbyist's job includes

A lobbyist's job includes. researching and understanding issues being considered by lawmakers. practicing law and defending clients in court ... making political connections and giving gifts to lawmakers in exchange for support

Lobbyists may be among a legislator's constituencies, meaning a voter or bloc of voters within their electoral district; they may engage in lobbying as a business. Professional lobbyists are people whose business is trying to influence legislation, regulation, or other government decisions, actions, or policies on behalf of a group or individual who hires them. Individuals and nonprofit organizations can also lobby as an act of volunteering or as a small part of their normal job. Governments often define and regulate organized group lobbying that has become influential.