By Ashley Joannou A new premier of Yukon is expected to be chosen by the governing Liberal party on Thursday, leaving the winner with just months to make their mark before a territorial election has to be called. Yukon Liberals will pick the party’s next leader at a convention in Whitehorse to replaced outgoing premier Ranj Pillai, who announced in May that he would be stepping aside once a successor is chosen. An election must be held on or before Nov. 3 in the territory that has been governed by the Liberals since 2016. The leadership race pits party insider and longtime local businessman Mike Pemberton against Doris Bill, the former chief of the Kwanlin Dun First Nation. Pemberton is chair of the Yukon branch of the federal Liberals and…