The “lockdown” on the Biden gaffes and missteps is entirely in the hands of the media, and if they can keep him before his supporters, but NOT in wide public exposure, he stands a chance of these not being used against him in the upcoming free-for-all brawl that will be the Democrat nomination process.
And for all that, Joe Biden might still be the best shot at the Presidency for the Democrats in 2020. Which is to day, he really has three chances of making it - Fat, slim and zilch.
Of course, there is also ballot harvesting and other means of “multiplying” the balance of Democrat voters.
Already they’ve redirected away from his handsy creepiness with children to simply being an old-fashioned pol with “warmth” in interacting with adults.