Election day was characterized by queues at many polling stations around the country, even after eight o'clock in the evening when voting usually closes.
This meant that several voters were reached by the results of SVT's polling station survey before they had time to cast their vote.
- Getting it right during the election process is problematic because it can naturally affect how the voter thinks.
It is quite serious, says Magnus Blomgren, docent in political science at Umeå University.
He is supported by Tommy Möller, professor of political science at Stockholm University.
- Of course, the occasional voter may have received information about the survey, which can influence how one votes, he says.
SVT: "Enormous need for information"
But the large TV audience's need to be updated outweighs the risk of influencing late voters, thinks Michael Kucera, responsible publisher for SVT's election watch.
- There is a huge need for information around the income statement.
It is a very important publication for us.
The picture during the evening was nevertheless that the queues were significantly reduced, this was shown not least by our local reporters out in the field.
How do you see Valun possibly influencing people who did not have time to vote?
- All journalism can conceivably influence voters.
A balance needs to be made here, and for me this outweighed the great need for information that exists around the vote count.
"Be the crowning glory"
Whether yesterday's polling station survey actually influenced late voters in their decision is of course difficult to know, says political scientist Magnus Blomgren.
But he thinks that SVT should have more ice in its stomach going forward - and let people finish voting.
- I think we will have quite a big discussion about election surveys and opinion polls in general after this election.
But this was somehow the crowning glory, he says.