With the possibility of two separation referendums on the horizon, Canadians could be forgiven for wondering what would happen if voters in one province or another decide they no longer want to be a part of Canada.Alberta Premier Danielle Smith has pledged that her province would hold a referendum in the fall essentially asking if voters want a second binding referendum on separation at a later date.In Quebec, Parti Québécois Leader Paul St-Pierre Plamondon — who could be premier after October’s election — has promised a secession referendum in his province during a first mandate.While polls suggest the secessionist vote…