The June 7 results show the elections office having counted 66,467 ballots, with Bolanos receiving 39,414 votes and Melville, 27,053 votes.
This election is the first since at least 1998 in which the incumbent or the second-in-command to a retiring sheriff has shared the ballot with a challenger, according to county voting archives. It's also the first election over those two decades in which the winner did not take office with at least 98 percent of the vote.
One factor that likely contributed to the unusually good showing of a candidate facing an incumbent in the race for San Mateo County sheriff is the 2007 incident in which Bolanos and then-sheriff Greg Munks were detained by Las Vegas police in connection with an FBI sting operation involving illegal brothels.
Police found Munks inside an illegal brothel. Although Bolanos was reported to be on the premises, he told The Almanac that he did not enter the brothel. Both men were detained, but neither was charged with a crime. Bolanos was serving as undersheriff at the time.
Details of the incident remain murky 11 years afterwards, but the matter has surfaced in the public arena regularly during the election season.
Go to is.gd/Vguide more on this year's candidates.
Go to is.gd/SOdonations for information on candidate fundraising.
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