Latest tally puts London Breed ahead of Mark Leno in San Francisco mayoral race

SAN FRANCISCO, Calif. (KTVU/BCN) - Board of Supervisors President London Breed is surpassing former State Sen. Mark Leno by 1,580 votes in San Francisco's mayoral race, according to numbers released Sunday afternoon.

Breed currently has 103,388 votes at 50.38 percent, while Leno has 101,808 votes at 49.62 percent.

Friday's tally showed Leno at the lead with 50.04 percent of the vote, or 83,667 votes.

Breed had 49.96 percent of the vote, or 83,523 votes, but jumped to the lead Saturday.

Elections officials said the provisional ballots will not be counted until next week.

The winner of the race will serve the remainder of the late Mayor Ed Lee's term, which runs through January 2020. Lee died unexpectedly in December.