Judicial officials and election observers meanwhile were still counting ballots in Beirut, where a list of outsider candidates has challenged a unified political coalition for control of the municipality council.
A judge inside the ballot counting center, where all tallies were being completed by hand, said he and other officials had not slept in over 24 hours.
"We are short-staffed, and we've had to help each other out," the official said on condition of anonymity because he was not authorized to speak to the media.
The coalition is headed by Jamal Itani and is backed by groups from across the party spectrum, including Hariri's Saudi-backed Future Movement, the Iran-backed Amal group and the country's three main Christian parties.
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Officials from a competing list, Beirut Madinati __ Arabic for "Beirut, My City" __ said they would not make any statements until official results were known. Madinati's candidates, who have portrayed themselves as non-affiliated technocrats, have vowed to clean up the capital's streets and politics in the wake of a monthslong trash crisis.
The municipal elections held yesterday in only two areas of the country, the capital, Beirut, and the eastern Bekaa Valley region were the first vote in Lebanon since 2010.
The government has postponed parliamentary elections, citing security concerns linked to the conflict in neighboring Syria. Lebanon's parliament has failed to elect a president since May 2014 because of lack of quorum amid political disagreements.
Perhaps reflecting urban disillusionment with the political limbo, the turnout was low in Beirut, only 20 per cent, just slightly higher than the 18 percent who voted in 2010.