You're politically astute. in your own objective opinion, who among the potential Democratic nominees stands the best chance of winning the ELECTORAL vote (not the Popular vote, which doesn't count). I'm still thinking Biden, despite his poor start and spontaneous rudeness, which might actually be an asset versus Trump's spontaneous rudeness. Also, he's the only candidate who would have a married First Lady, if that matters. Catholic might be more appealing to the Swing-States than Jewish, straight rather than gay, well-known as a Vice-president, being supportive of his sketchy son might be a plus rather than a minus, NOT self-labeled a Socialist, feisty, etc.
But, I'm just guessing what would appeal the most to the Midwest and Florida.
Any one of the candidates would be a huge improvement regarding Green issues.