April 13 (UPI) -- Voters in Ontario and Quebec, Canada, are voting in byelections on Monday that could give Prime Minister Mark Carney a liberal majority. The ballot boxes are open in two ridings , or electoral districts, in Ontario as well as one in Quebec. The Liberal Party of Canada needs to win one of three elections to establish majority control of the government. Liberal hold 171 of 343 seats in the House of Commons. Both Ontario districts, Scarborough Southwest and University-Rosedale,