Tucked away amid a host pledges in the Conservative platform is a promise to axe one of Parliament’s primary purposes.Conservative Leader Pierre Poilievre announced Tuesday that under his government a referendum, not politicians, would decide if Canada needed to raise taxes. Poilievre would “ban” any new taxes or tax increases unless the Canadian public votes for them.The platform commitment is in keeping with Poilievre’s overall theme of tax relief for Canadians, requiring any new spending to be found through savings in other programs, and generally shrinking the size and cost...