Hungarians are voting in a referendum on the European Union's migrant quotas. The polls opened at 6 am local time and will close at 6 in the afternoon. 

The referendum asks whether to accept EU-imposed migrant quotas for each member in the bloc.  The government is urging citizens to vote "No," and it's widely expected that an overwhelming majority will do just that.  A victory for No would boost Prime Minister Viktor Orban's standing at home and embolden him in his battles with Brussels.