OTTAWA —The departure of Steven Guilbeault, the Liberals’ face of climate, has sparked a question among fellow progressives. Is there a home for those who swing centre-left and who believe in unapologetically championing the environment under Prime Minister Mark Carney? Green Party of Canada Leader Elizabeth May, who back in the fall offered her vote to ensure what was then a minority Liberal government did not fall in exchange for Carney pledging his support for the country’s international climate targets, pondered that aloud on Wednesday, after saying she spent the day before trying...