The elections board was beginning to count some 78,000 absentee and other paper ballots Monday.
While a runoff had been anticipated, trying to figure out who would be in it had been something like Parcheesi for politics junkies.
City Council Speaker Christine Quinn was the front-runner for months and was jousting with Thompson for second place in polls as recent as early September. Ex-Rep. Anthony Weiner leaped to the front of the pack for a time after getting into the race in May, before the public learned that his X-rated exchanges with women online continued even after similar sexting spurred his 2011 resignation from Congress.
Regardless of the mayor's race, Democrats still will be asked to go to the polls again on Oct. 1. There's a runoff between City Councilwoman Letitia James and state Sen. Daniel Squadron for the party's nomination to succeed de Blasio as public advocate.
If de Blasio's final vote count ends up below 40 percent, the mayoral primary will also be on the ballot, because Thompson missed the Friday deadline to have it removed.
Lhota ramped up his general election campaign over the weekend and was expected to address de Blasio's nomination later Monday. Adolfo Carrion Jr., a former Bronx borough president running as an independent, will also be on the November ballot.
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