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.
There is some control over price in a narrow range, whereas the purely competitive firm has none. There is relatively easy entry; in pure competition, entry is completely without barriers. In monopolistic competition, there is much nonprice competition, such as advertising, trademarks, and brand names.