Iqaluit

Located in the Arctic, where average temperatures in the capital city Iqaluit are below freezing for eight months of the year, it is so vast and inaccessible that the only way to travel between its 25 communities is by air.

The ballot boxes are then flown to Iqaluit, and then to Ottawa.

So there's a third destination on this whistle-stop tour – Iqaluit, the capital of Canada's northernmost territory of Nunavut and homeland of its Inuit people.

Air India confirmed that the flight had been diverted to Iqaluit due to a "security threat posted online".

A video posted on social media last week showed passengers draped in woollens, walking down the icy ladder of an Air India plane into the frigid air of Iqaluit, a remote city in Canada.