OAKLAND (CBS SF) — It appears any one of five Oakland mayoral candidates has a solid chance of winning the November election, according to an exclusive poll.

A SurveyUSA poll conducted for KPIX 5 showed five candidates in double digits ahead of the ranked choice vote: Rebecca Kaplan (19%), Libby Schaaf (17%), incumbent Jean Quan (15%), Joe Tuman (15%), and Bryan Parker (10%).

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11 percent appear on the poll as “undecided.” There are a total of 15 candidates running for Oakland Mayor.

SurveyUSA said results came from 515 people determined to be likely to vote on or before the November 4 election.

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The poll’s margin of error was 4.4 percent.

Also known as “instant runoff” voting, Oakland’s ranked-choice voting allows voters to mark second and third choices on their ballots.

If no candidate wins a majority of first-place votes, a process is triggered in which the lowest-ranking candidate is eliminated and the next-ranked choices on that candidate’s ballots are distributed among the remaining candidates.

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The instant runoff continues until there is a winner.