This report examines three barriers experienced during the 2014 open enrollment period in Marketplaces: Medicaid backlogs, procedural challenges facing disadvantaged populations, and difficulty with plan selection. It also explains promising strategies states have used to overcome those barriers, including using Medicaid computer systems to make eligibility determinations for the Marketplace and simplifying consumer choices by standardizing plan designs within each metal tier. These and other practices suggest directions to pursue in improving Marketplace enrollment for 2015 and beyond.