According to the NEC, some 80 percent of the 8 million eligible voters had cast a ballot.
The dam collapse follows heavy rains across Southeast Asia, which has led to severe flooding in several parts of Cambodia.
The Cambodian government has ordered internet service providers (ISPs) to block the websites of 15 news websites of independent outlets including Voice of America for two days before and during the country’s election.
Reuters could not open the websites of Radio Free Asia Khmer, Voice of America Khmer and Voice of Democracy on Friday.
The League for Democracy Party (LDP) is one of 19 parties registered to compete against the ruling Cambodian People’s Party and its leader, Prime Minister Hun Sen.
Human Rights Watch and the International Federation for Human Rights said in a statement that the election would pave the way for Hun Sen to cement his uncontested power in Cambodia.
Many Cambodians support the CPP due to its investment in numerous local development projects.
Congressman Ed Royce, chairman of the foreign affairs committee, said: “The people of Cambodia deserve far better than the Hun Sen’s despotism.”
Survivor of Cambodia's murderous Khmer Rouge regime, now head of institute that documents regime's crimes, among six recipients of Asia's version of Nobel Peace Prize.
The CPP has used many slogans during its campaign, including perhaps the most ubiquitous: “A CPP Win Means the Whole of Cambodia Wins”.