Reuters: Elections to fill three seats in Canada’s House of Commons will be held on September 8 with the major issue likely to be the opposition Liberal Party’s proposal to introduce a carbon tax. Conservative Prime Minister Stephen Harper announced the date of the elections on Friday. Two of the seats had been held by the Liberals, one in Ontario and one in Quebec, and another in Quebec held by the separatist Bloc Quebecois. The outcome will not affect the balance of power in the House …