Just an opinion, but I don't think Bernie can get elected. I think that 'democratic socialism' can be sold to enough voters to get elected, but I don't think Bernie is charismatic or endearing enough to be the person to do it.
I think the most electable is Biden, but I don’t think he’s progressive enough to get the nomination. The rest are not centrist enough to win a general election.
I think Clinton (by losing) and Trump (by winning) demonstrated that Centrism is not what wins you elections.
Centrism won with Clinton I and Bush. Clinton II lost because Clinton II was a terrible shoehorned candidate—a kind of negative Bob Dole. A Kerry would have won.
Idk man, checkout his town hall on fox. The audience goes nuts for him