This is what I think it would have actually looked like if Clinton got 68% of the popular vote in 2016:
Most of her margin comes from doing much better in red states, as the most solidly Democratic states are already close to being maxed out. she gets into the low-to-mid 70s in states like California, Illinois, New York, Vermont, and Massachusetts, but only clears 80% in Hawaii and DC. she improves dramatically in red states that are trending D, like Texas and Georgia, and wins narrow victories in the most solidly GOP states like Utah, Wyoming, and Oklahoma. those last three states would be the only ones decided by single digits IMO.