According to Jason Kenney and Andrew Scheer, neither low Oil and Gas prices, nor the American shale gale, nor the increase in U.S. crude oil production & resultant glut, nor the massive structural shift in the oil industry had anything to do with Alberta's downturn and continued recession: it was entirely caused by Superwoman Rachel Notley and/or her Superman sidekick, Justin Trudeau.
Stephen Harper's arrogance sealed the fate of Northern gateway pipeline, not the Liberals. CBC needs to challenge all Conservatives who lie that PM Trudeau killed Gateway & that Prem Notley gave her blessing. The court overturned it! Flaws were many. Opposition was insurmountable: the late Premier Prentice knew NG wouldn't proceed at Kitimat