The Conservatives and Liberals were in a dead heat a week before Canada's federal election, according to a new poll released on Monday. The latest Gallup poll, commissioned by the Toronto Star, showed Prime Minister Brian Mulroney's Conservatives and John Turner's Liberals each had the support of 35 percent of decided voters. The New Democrats, under Ed Broadbent, drew 26 percent of those who expressed an opinion. Eight percent of respondents hadn't decided whom to back in the Nov. 21 election. The numbers were a marked contrast to the last Gallup poll which reported a week ago the Liberals had a 43-31 edge over the Tories. That survey evoked disbelief among Conservative strategists, and four polls by other firms had since reported the race was too close to call.