The riding of Cariboo—Prince George extends from near Williams Lake in the south to Prince George in the north and Vanderhoof in the west. Cities and towns in this area include Williams Lake, Quesnel, Wells, Prince George & Vanderhoof. Voters in the Vanderhoof and Prince George tend to vote more Conservative while voters in the Cariboo (Quesnel, Williams Lake) tend to lean towards the NDP.
The 2012 federal electoral boundaries redistribution concluded that the electoral boundaries of Cariboo—Prince George should be adjusted slightly, and a modified electoral district of the same name will be contested in future elections. The redefined Cariboo—Prince George loses a small portion of its current territory in the upper Bella Coola Valley to the district of Skeena—Bulkley Valley but is otherwise unchanged. These new boundaries will be legally defined in the 2013 representation order, which is likely to come into effect upon the call of the 42nd Canadian federal election, scheduled for October 2015. In the unlikely event an election is called prior to April 2014, the current electoral boundaries would remain in effect.