The client got into a city council race very late, three weeks before the primary. He realized that he needed every avenue of communication open to him including a web site. His opponent's backers worked hard to discredit him including a push poll asking questions like "don't you think that Aiken deserves someone who has live here all his life?"
His ideas were better and he understood that Aiken needed someone that would respond to his constituents. He finished the primary with over 49% of the vote and won the resulting run off. He was unopposed in the general election.
A web site can be a vital part of any campaign whether the goal is to win an election or sell more product.