https://www.realclearpolitics.com/articles/2020/03/09/the_democrats_dilemma_after
Joe Biden’s electoral turnaround is the swiftest and most dramatic in modern American politics. Only a day before the South Carolina primary, his candidacy was on life support. Then came Rep. Jim Clyburn’s crucial endorsement, along with his tough-love message for the candidate to stay focused. Clyburn is a formidable figure in his home state and the highest-ranking African American in the House of Representatives. His word carries weight. The weight it carried this time was Joe Biden’s quivering body, which had been left for dead. It helped him win a thumping victory in South Carolina and gave him extraordinary momentum for Super Tuesday, only three days later.
Biden’s unexpectedly strong showing has made him the party’s the presumptive nominee. His remaining opponents in the center lane, Amy Klobuchar, Mike Bloomberg, and Pete Buttigieg, not only dropped out, they endorsed the former vice president, as did Beto O’Rourke. Expect more high-fives to follow as the bigwigs and donors fall in line. As the old Chicago machine pols used to say, “Don’t make no waves. Don’t back no losers.” They saw Bernie Sanders as a loser, and a dangerous one at that.
The betting markets endorse Joe, too. His odds of winning the nomination are now over 85%. Bernie’s are under 10%. Only recently, before South Carolina, Sanders had been the clear favorite. No more. If he loses Tuesday’s primary in Michigan, his position will be dire. No turnaround has been more dramatic—or more helpful for party insiders—than Biden’s.