Mayor Muriel Bowser and LaRuby May burst into laughter at May's campaign headquarters on Election Day in Ward 8. (Erin Schaff/For The Washington Post)

LaRuby May, a former campaign staffer to D.C. Mayor Muriel E. Bowser, has won the Ward 8 seat on the D.C. Council, according to an unofficial final tally the D.C. Board of Elections released Friday night.

May’s win marks a fresh victory for Bowser, who campaigned actively for fellow Democrats May and another former aide, Brandon Todd, who won in Ward 4. With them, Bowser gains two new allies on the 13-member council as she pushes forward with her agenda and a proposed $12.9 billion budget for fiscal 2016.

May won in Ward 8 with 1,955 votes and a 1.09 percent margin, according to Denise Tolliver, a spokeswoman for the elections board. A margin slimmer than one percent would have automatically generated a recount, she said.

May’s chief opponent, Trayon White, said he will ask for a recount.

The elections board will hold a public audit of the votes Monday and will certify the votes May 14. May and Todd could be sworn in the same day.

Ward 8 Council candidate Trayon White takes part in a candidate forum in this February file photo. (Jahi Chikwendiu/The Washington Post)

Tolliver said a recount would have to wait until the results are certified, and that even then, the new council members could start work.

“It’s up to the council when they swear the people in, but they can be sworn in on the 14th, whether they request a recount or not,” Tolliver said.

When polls closed April 28, May and White — who is a self-described protege of Marion Barry’s — were just 152 votes apart in the race to fill Barry’s vacant seat on the council.

The elections board had until 5 p.m. Friday to tally more than a thousand outstanding provisional ballots, pending proof of residency from some voters who had registered the same day as the special election.

The board also accepted absentee ballots, postmarked no later than April 28, until 5 p.m. Friday.

White, who emerged from a large field of candidates, said he believed that many of the provisional ballots would go to him, tipping the race.

In the end, May won by just 80 ballots.