Well, Cuomo is a failure as governor, in my opinion, but Liberals may not see him that way. What criteria goes into making a Democrat candidate is a mystery to me. In my mind, Clinton would be the worst possible choice for them, after Biden. But then I thought she was their worst possible choice in 2016, which made her a good candidate for the country.
I think they will have to get rid of Biden. Not even Democrats are stupid enough to put that freak up against Trump.
The Democrat hoi polloi will vote for whomever they choose to throw into the meat grinder, but Independents are going to go for Trump this year.
But I think you are right about Cuomo or Clinton being the trained monkey who will head the ticket for them in November.