What is the main function of most lobbyists working for interest groups?

 main function of most lobbyists is to help with funding that improve the chance of a certain political representative to win the election.
The representative that's supported by these lobbyists  are usually the candidates who are openly willing to create a Law/ legislation that would somehow benefit the interest group. 

Sometimes but itt depends, their is a lot if drugs on campus too so you really can't just say that