When simply asked whether they wanted Medicare to remain a defined benefits plan or see it changed into a voucher system to buy private insurance, a full 65 percent of Americans said they were opposed to this change, while only 34 percent supported it. After the poll explained that the cost of private insurance would likely rise faster than the value of the vouchers, causing seniors to pay more for insurance (as the CBO says would happen under the House Republican budget), the total opposed jumped to 84 percent.