With wins in Michigan, Missouri and Mississippi, Biden appears to be on an unstoppable march to the nomination

The campaign for the Democratic nomination has moved at warp speed over the past 10 days, and on Tuesday night it reached a decisive turning point. Barring something unforeseen, Democrats now know that former vice president Joe Biden will be the party’s nominee to challenge President Trump in November. …

As a result of Tuesday’s results, Sanders and Biden now face new — and different — challenges. For Sanders, it is dealing with the question of how long to keep the fight going in a year when defeating the president is the overriding priority for Democratic voters. For Biden, it is making the pivot to a general election campaign, while bringing unity to his own party. CONT.

Dan Balz, Washington Post