'We all think this is stupid': How does Sweden's complicated ballot system work?

Sweden's elections are fast approaching, and while the official election day is September 11, eligible voters living overseas were able to start voting as of Thursday last week.

While many countries have a single ballot system, Sweden's is based around party ballots, and it uses a lot of paper: 673 million ballots were printed for the 2018 election, only 3 per cent of which were used to vote.

"We all think this is stupid, this is a system that (is environmentally) not good," says Eva Debels, head of the city of Stockholm's Electoral Committee Office.