Belarusian authorities vowed to prevent any large-scale demonstrations following the election (such as those that marked the Orange Revolution in Ukraine). Despite their efforts, the opposition had the largest number of demonstrators in years, with nightly protests in Minsk continuing for a number of days after the election. The largest protest occurred on election night; reporters for the Associated Press estimated that approximately 10,000 people turned out. Election observers from the Russia-led Commonwealth of Independent States (CIS) and the Organization for Security and Co-operation in Europe (OSCE) differed on the Belarusian election.