Eric Olson, an analyst at the Woodrow Wilson Center in Washington, told the Journal both parties were reckless in declaring victory so early in the ballot-counting process.
"I think it's incredibly irresponsible for them to call it at this point," Olson said.
Up to 10 percent of polling places did not have electricity, meaning their results would take longer to tally, he said.
The ballot included a record nine political parties. Election observers said they noted few irregularities during voting.
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