The upcoming Toronto-St. Paul's federal byelection will be a critical test for Prime Minister Justin Trudeau and his party — a bellwether indicating how the party is faring in an area of the country where Liberals have performed well for decades. CBC News spoke to 15 voters in the riding to gauge support for the incumbent party and to learn more about what's motivating people at the ballot box. While the June 24 byelection is being held to pick a new MP for Toronto's midtown, some voters are treating the summer vote as a referendum on Trudeau's time in power....