SACRAMENTO — From a shopping mall in Stockton to a Cheesecake Factory restaurant in San Diego, Gov. Arnold Schwarzenegger has been touring some of California's contested legislative districts, urging voters to "terminate" legislators who defy him. The outcome of the November elections could prove critical to his stated goal of reshaping California's finances and political culture. Yet political experts say that wresting control of the Legislature from the Democrats this fall is a tall, if not improbable, order even for a politician with Schwarzenegger's popularity. Most lawmakers represent districts they intentionally designed for easy reelection. Although 100 of California's 120...