David Weigel of the Washington Post answers questions that readers have asked:

In the old world, the one we lived in before the coronavirus, this would be primary day in Puerto Rico. A few days earlier, Joe Biden would have probably won Georgia and announced an “insurmountable delegate lead” over Bernie Sanders. Donald Trump would be holding rally after rally, flying into swing states to prove the enthusiasm gap between him and the Democrats.

That world doesn’t exist anymore, so it’s a good time to answer some questions from readers and subscribers. Many of them still had questions about the primary, which is not over, although no delegate lead as large as Joe Biden’s has ever been overcome by a challenger. A few had questions about how elections will go forward during a pandemic, something that has not happened since 1918. Luckily, most of the questions people have about this…