Single payer healthcare in Vermont and Maine

https://legislature.maine.gov/legis/bills/bills_128th/billtexts/SP012701.asp
There is a draft bill in the Maine legislature making the mention of single payer healthcare in Maine. A snippet:“Portions of the system will be based on the single-payor system in place in Vermont…”. What is the system in Vermont?
I am in favor of single-payer, and would like to see this proposal fleshed out more.

It died:

I think they were looking at option 3.

That’s really strange they would write the draft that way then.
The 128th Maine Legislature began in December 2016. The bill also references the Colorado referendum of 2016, so I can tell it’s not just an old proposal brought back.

Not an Elections topic.