Members of Congress look to lobbyists for a number of things other than technical information. For example, they look to lobbyists for
Help in drafting laws. Lobbyists will often give lawmakers pre-written bills to submit.
Campaign donations. Lobbyists often represent interest groups that can give large sums of money to politicians for their campaigns.
Political cues. Politicians look to lobbyists to keep them informed about the opinions of the people the lobbyists represent. This helps politicians know what important groups of constituents are thinking.
Endorsements. Politicians also benefit if they can get the lobbyists’ organizations to endorse them, thus helping them get the votes of people who trust the various interest groups.