The Denver Post’s editorial board has come out against Amendment 87, the proposed graduated income tax ballot measure. In an Oct. 11 editorial, the board argued that extracting $2.7 billion in a single year from the state’s largest businesses would “do more harm than good.” While the board took exception to some opponents’ claims, such as the measure’s impact on businesses under $500,000 in taxable profit and on deductions for seniors and veterans, it concluded that the risk to Colorado’s largest employers outweighs the benefits. Citing conversations with Gov. Jared Polis and Denver Metro Chamber of Commerce president J.J. Ament,...