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.
The long-run equilibrium of monopolistic competition is like that of perfect competition in that entry, when the industry makes short-run economic profits, and exit, when it makes short-run economic losses, drives economic profits to zero in the long run.