Almost a quarter? What is WRONG with people. Trump won 80% of the vote
Do you mean 80 million votes and not 80%?
You can't possibly believe that, can you?
There are tons of minorities, college students, millenials, urban elites, government workers, etc., who lean left. They tend to live in densely populated areas, which means there are a lot of them.
Look at all the elections on the state and local level, even in red states, going back decades. The idea that folks who vote Democrat only constitute 20% of the population is simply ludicrous.