In a televised election debate, opposition leader Jonas Gahr Støre spoke in some of his strongest terms yet over Prime Minister Erna Solberg's leadership.

The strong exchange between the pair came as they discussed the role of populist coalition partner the Progress Party and immigration minister Sylvi Listhaug.

Listhaug has recently been criticised for misrepresenting Sweden's internal security as part of her election campaign, and has in the past used Sweden as a cautionary tale while calling for tighter immigration policies in Norway.

On Tuesday, Sweden's Migration Minister Heléne Fritzon cancelled a meeting with her Norwegian counterpart at the last minute after judging that Listhaug's visit to Sweden was part of her campaign.

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