Do the MAGI changes mean more people will be eligible for Medicaid (even when there is no eligibility expansion)?

No, overall the new methodology does not change the number of people eligible for Medicaid. The MAGI-based standard will result in approximately the same number of people being eligible under the new standard as would have been eligible under the old standard. However, there may be some differences in which people will qualify--or not qualify--depending on how they might have fared under the old system (with deductions and disregards).