As he has since launching his campaign for governor, Pritzker argued that doing away with the constitution’s flat tax requirement in favor of a system where higher incomes are taxed at higher rates will be the key to stabilizing the state’s finances for the long term. Under a set of tax rates that will take effect in 2021 if voters approve the constitutional change, only about 3% of taxpayers — those earning more than $250,000 a year — would pay more.