SACRAMENTO — Presumed Republican presidential candidate Rudolph W. Giuliani is seeking to broaden his fundraising base beyond Wall Street, aggressively prospecting in California with stops at a country club here and homes in Orange County and Del Mar in coming days. A review of donors to the former New York mayor's presidential exploratory committee and to a political action committee he controls shows that his main contributors have been blue-chip law firms, investment houses and financial services companies in New York, New Jersey and Connecticut. Those states account for three-fourths of the money he has raised. But in making his...