http://bit.ly/2AbEv8g Medicare for All Emerges as Early Policy Test for 2020 Democrats Presidential Election of 2020, Health Insurance and Managed Care, Taxation Many liberals who are influential in the presidential primaries want a single-payer system, but some voters are uneasy about losing private insurance. Most candidates are now walking fine lines. JONATHAN MARTIN and ABBY GOODNOUGH http://bit.ly/2S4oUTa February 2, 2019 at 05:30AM