Voters in Sweden have been casting their ballots in a general election. Prime Minister Stefan Lofven, who is also leader of the ruling Social Democrats voted in the capital Stockholm. He urged the country to vote for a 'stable government, capable of leading Sweden in uncertain times'. The elections are the first since the government took in more than 160-thousand migrants from the Middle East and Africa in 2015. With immigration being a major issue of contention, the far-right, anti-immigrant Sweden Democrats are expected to make historic gains. Most, but not all, opinion polls suggest the Social Democrats will win. Our reporter Guy Henderson has more.