Elected on a campaign of "sunny ways" and "real change," the expectations were high for Justin Trudeau when he came into power in 2015. But after a series of scandals, the public perception of Canada's prime minister might be shifting ahead of the fall election.

Today, we continue our series on the federal party leaders by speaking to CBC News political reporter Aaron Wherry. He has a new book out called Promise and Peril: Justin Trudeau in Power.