Miramichi—Grand Lake was created by the 2012 federal electoral boundaries redistribution and has been legally defined in the 2013 representation order.

It came into effect upon the call of the 42nd Canadian federal election, scheduled for 19 October 2015.

[3] Northumberland (later known as Northumberland-Miramichi) was a federal electoral district in New Brunswick, Canada, that was represented in the Canadian House of Commons from 1867 to 1988.

Change for the Canadian Alliance from 1997 are based on the results of its predecessor, the Reform Party.

Unionist candidate W. S. Loggie's change from 1911 is based on the Conservative Party's results.