… Mr. Trump’s attacks on Mr. Biden have defied the pleadings of his own aides, who think almost any other candidate would be easier to defeat, and left Republicans puzzled while delighting Biden supporters. …
A recent survey of battleground states conducted for the Trump campaign by a leading Republican pollster, Tony Fabrizio, showed Mr. Biden handily beating Mr. Trump, according to three people briefed on the results. …
Separately, Republicans who are hoping to rescue Senator Martha McSally of Arizona, one of the party’s most imperiled incumbents, have found Mr. Biden leading Mr. Trump in that state, which no Democratic presidential candidate has carried since 1996. CONT.
Jonathan Martin & Maggie Haberman, New York Times