Should he stay or should he go now? A look at Trudeau's options after byelection loss

A historic defeat for the Liberals in a downtown Toronto byelection has put a glaring question mark on Prime Minister Justin Trudeau's political future. 

Insiders warn the Conservative victory could be a sign portending a Tory blue wave when the rest of Canada goes to the polls.

Here's a look at the options Trudeau and the Liberals face as they enter a summer of soul-searching. 

Liberals look for a new saviour