Massachusetts has the lowest rates of uninsured residents in the United States at 2.8% [0]
California is 2.6x higher at 7.8% [1], is not improving, and is a much bigger state numerically, so we're talking about ~3 million uninsured people. Prior to Obamacare, California was at a dismal 16%. And note: CA had Dem supermajority rule for years prior to Obamacare's implementation, and can easily pass the healthcare legislation it's constituents want and deserve. They, unlike Massachusetts, have chosen not to.
Massachusetts has less uninsured because they go beyond the bare minimum provided by Obamacare. California Democrats can, and should, do more.
[0] https://www.wbur.org/commonhealth/2019/08/20/uninsured-rates...
[1] https://www.sacbee.com/news/local/health-and-medicine/articl...
