Norway's opposition lead shrinks before election - poll

Norwegian Prime Minister Jens Stoltenberg visits Kvam, a flooded area, in central Norway May 23, 2013. REUTERS/Geir Olsen/NTB Scanpix

OSLO (Reuters) - Norway's ruling Labour Party and its allies are closing in on the centre-right opposition, an opinion poll showed on Tuesday, suggesting a close race in next month's parliamentary election with small parties the kingmakers.

Support for two parties aligned with the opposition fell below the four-percent threshold which guarantees them a place in parliament in the September 9 election. Labour's partners polled higher, TNS Gallup's poll for TV2 television showed.