The poll, conducted by Norwegian Broadcasting (NRK), measured would-be voter response to a proposed application for EU membership in January.
Fully 54.3 percent of those responding said they would vote against seeking EU membership, while 34.6 percent said they would vote in favour of EU membership. Just over 11 percent said they were undecided.
Norwegians have narrowly turned down EU membership twice, and the current poll indicates opposition has grown.
The country's current left-center coalition government, which includes the most vehemently anti-EU party, the Center Party, has decided that it won't raise the issue of EU membership during this parliamentary period.
