Kashkari's latest spending report, filed Friday with the secretary of state, underscored the trouble Republicans face in raising enough money to run viable statewide campaigns in heavily Democratic California.
Just $4 million – far less than what gubernatorial candidates typically spend in California – of the $7.1 million that Kashkari spent came from donors. The rest came from his personal fortune.
Kashkari, a former assistant U.S. Treasury secretary and Wall Street banker, had never before run for elected office. Brown defeated him 60% to 40%.
That victory was Brown's second in a row over a Republican opponent who spent more than he did. In 2010, billionaire Republican Meg Whitman spent more than $178 million on her campaign against Brown, who spent just $36 million.
This time, Brown devoted most of his reelection spending – $5.2 million – to his campaign for Proposition 1, a water bond measure, and Proposition 2, which bolstered the state's rainy-day fund. Voters passed both.
Brown spent less than $800,000 on other campaign activities.