The coronavirus outbreak has wrought enormous changes to American life over the past several months, and politics have been no exception. Presumptive Democratic nominee Joe Biden has basically been nowhere but his basement, hosting public teleconferences and podcasts that have garnered virtually no public interest. Meanwhile, President Trump has had to suspend his usual practice of hosting raucous public rallies, although his big return to the stage was set for June 20 in Tulsa, Oklahoma. But rallies are one thing; four-day nominating conventions — loud, indoor extravaganzas for the better part of a week — are quite another. Right now, the Republicans look set to push forward. Originally planned to be held in late August in Charlotte, North Carolina, the GOP moved its public nomination of Trump to Jacksonville, Florida, after Roy Cooper, the Democratic...