The Moderates' lead over the Sweden Democrats has grown to 5 percentage points, the largest increase in eight years. The Moderates are on 22 percent, compared with 19.9 percent on election day.
At the same time, the Liberals are losing support and are now back in the danger zone around the parliamentary threshold of 4 percent - 5.3 percent in the election.
According to Nicklas Källebring, opinion analyst at Ipsos, the lower support for the Liberals has contributed to the Moderates winning more votes.
"They (L) have only retained about two-thirds of those who voted for the party in the election. They have lost most of their votes to the Moderates. It is clear that it is supporters who are returning," he says.
SD gets 17 percent in the survey, compared with 17.5 percent in the election.
On the red-green side, things are basically unchanged.
The Ipsos survey consists of 1,694 interviews with eligible voters during the period September 15-27.
