Election officials released the first results of ranked choice voting on Friday. They show Oakland City Councilmember Jean Quan with 51 percent of the vote and former State Senate President Don Perata with just under 49 percent.
On election night, Perata was in the lead with 35 percent.
In the ranked choice system, officials count up voters' second and third choices, until one candidate reaches at least 50 percent.
The results are still subject to change. There are still a large number of absentee and provisional ballots to count.