 This effort to reset the campaign highlighted in the papers this morning, the front page of The New York Times, a story by many authors, but under the headline, many backers of Biden in 20 want a plan B. And they write this, say, as Mr. Biden and his allies have scrambled to fix the damage from the debate last week and to insist he will not bow out of the race. Dozens of Democratic voters have said they no longer believe he can accomplish