It is now (almost) possible to walk across the continental United States—East to West, from Maine to Oregon (or California or Washington)—and only step foot in counties that a Republican won in the presidential election (as in the green line in the map above). The only remaining gap is the solid-blue state of Vermont.
Of course, it has long been possible to take a similar walk from North to South—from the Canadian to the Mexican border (the black line on the map).
Just saying. . .