By Catherine Morrison Former prime minister Stephen Harper’s official portrait was unveiled in Ottawa Tuesday, ahead of the 20th anniversary of the election of his first Conservative government. Speaking to a crowd of ministers, premiers, current and former MPs and other dignitaries, Harper stressed that parties must work together to preserve Canada’s national unity and independence. “I sincerely hope that mine is just one of many portraits of prime ministers from both parties that will continue to be hung here for decades and centuries to come,” said Harper. “But that will require that in these perilous times, both parties, whatever their other differences, come together against external forces that threaten our independence and against domestic policies that threaten our unity.” Harper added that “we must preserve Canada.” “We must make…







