Yes, I'd be happy to. I'll refer to the Supreme Court of Canada, and I'll quote from them:
Though discretionary decisions will generally be given considerable respect, that discretion must be exercised in accordance with the boundaries imposed in the statute, the principles of the rule of law, the principles of administrative law, the fundamental values of Canadian society, and the principles of the Charter.
In the Ahousaht case from 2014, the then minister of fisheries and oceans wrote a handwritten note beside the science advice from her advisers, who advised not to reopen a herring fishery. She wrote beside it that it should be reopened, and she gave a direction to do so. The judge in that case in Federal Court admonished the minister for “fudging the numbers” and said that it seems that once the minister and the DFO depart from science-based assessments, the integrity of the fisheries management system is harmed.
There is never absolute discretion for elected officials. That is a misunderstanding of the law.