Experts thought McDonald’s all-day breakfast boom was a fad that would quickly fizzle out, but only because they forgot to consider one very important factor: This election season has been unrelentingly awful. Riding a wave of McMuffins, the Golden Arches’ third-quarter sales surpassed analysts’ projections, growing 3.5 percent at locations open for at least a year. Sensing that its all-day breakfast has been the only thing miserable Americans have been embracing this year, McDonald’s expanded its offerings to include McGriddle sandwiches and make McMuffin and biscuit sandwiches available at all locations. Which speaks to a sad truth: the fact that McDonald’s is what Americans are turning to in order to feel better.