Ralph Nader knows a thing or two about running for the US presidency. He ran as an independent or third party candidate in five elections. He kept his name off the ticket this time around and is calling the Donald Trump win “a nightmare.” In an interview with Bloomberg TV Canada's Amanda Lang, the U.S. consumer advocate talks about what he fears most under a Trump presidency, why he thinks this presents an opportunity for Canada to lead, and how he sees the 2020 election as an end to the two-party tyranny. (Source: Bloomberg)