The Conservative Party trails at 14.4 percent.
The results would mean Norwegian Prime Minister and Labor Party leader Jonas Gahr Støre would form a government after a closely fought campaign dominated by debates over the cost of living, wealth taxes, the future of Norway’s $2 trillion sovereign wealth fund, and the country’s relations with U.S. President Donald Trump.
Earlier on Monday, Støre said that rising prices had been at the top of voters’ minds, as well as foreign affairs issues such as the wars in Ukraine and Gaza.
Støre has been prime minister of a minority center-left coalition government since the last election in 2021.
Støre’s improvement in the polls this year is closely tied to the return to government of popular former NATO Secretary-General Jens Stoltenberg, who became finance minister in February. Within days of his appointment, dubbed the “Stoltenback” effect, Labor surged 10 percentage points.
Ferdinand Knapp contributed to this report.