Pierre Poilievre spent day three of the federal election campaign in the Greater Toronto Area announcing a promise to cut the GST on sales of new homes valued under $1.3 million. He also faced questions over his refusal to receive his top-secret security clearance which is required to be briefed by Canada’s spy agency. Read more: http://www.cbc.ca/news »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and in-depth