Main article: List of John McCain presidential campaign staff members, 2008. On July 2, 2008, Steve Schmidt was given full operational control of McCain's campaign. Schmidt had managed Arnold Schwarzenegger's 2006 re-election and was a top Dick Cheney aide.
Monopolistic competition. The model of monopolistic competition describes a common market structure in which firms have many competitors, but each one sells a slightly different product.
1. Existence of large number of firms: The first important feature of monopolistic competition is that there is a large number of firms satisfying the market demand for the product. As there are a large number of firms under monopolistic competition, there exists stiff competition between them. These firms do not produce perfect substitutes.