Don't forget this
You know, it's sometimes hard to understand why someone would support a candidate you don't like or that you simply consider bad. You might think that in order to ensure victory in November, you need to pressure or make people feel a bit hopeless or bad about their choice (to see if they come to their senses).
The thing is that people support their candidates because they truly believe they are good and honorable people with a plan to move their country forward. They supporting Biden (like I do) is not an attack on Warren, Bernie or anybody, and vice versa. If we are serious about winning in November, we WILL vote for whoever is the nominee.
For instance, stop telling people their candidate is toast, or that they need to jump to so and so's bandwagon. Let the process advance. If Biden fizzles out, for example, I will support someone else until we find our nominee. Simple. I am certain supporters of all other candidates will do the same, unless they were never Democrats in the first place.
So, if your candidate had a good start, great- congratulations. If yours did not, don't despair yet, as horse races are won down the stretch- and friends, we got a horse race in our hands!