So, in Virginia, Northam was caught in either blackface or a KKK outfit, Fairfax has been accused of sexual assault, and Herring has admitted to wearing blackface.
If they all resign, the Speaker of the House of Delegates (Republican Kirk Cox) becomes Governor... and if he's also caught in something unsuitable (though what's "unsuitable" for Republicans is far laxer than what's "unsuitable" for Democrats) the new Governor is elected by the House of Delegates, currently controlled by Republicans.
I'm betting one of those first three finds a way to stick around at least long enough to make sure the Republicans can't pass another awful gerrymander.