Stuck in his Delaware home while President Trump appears on-screen daily discussing the coronavirus crisis, presumptive Democratic nominee Joe Biden is turning toward a shadow cabinet loosely resembling out-of-office party officials.

The strategy devised by the former vice president’s campaign is rare in modern presidential politics, since national emergencies and crises, ranging from World War II to the immediate post-9/11 response, usually stir a strong measure of bipartisanship, at least for a while.