I'd wager that even the examples you said are probably at least "pink" in terms of political alignment. The college campus thing is usually overblown. Most people don't really understand how small the college population is. Even the largest of colleges only have 20K students. So take a city with a million people, and have 20K of that be liberal brainwashed college students, and that's literally 2% of the city's population. So hardly enough to turn it blue.
I'd wager that even the examples you said are probably at least "pink" in terms of political alignment. The college campus thing is usually overblown. Most people don't really understand how small the college population is. Even the largest of colleges only have 20K students. So take a city with a million people, and have 20K of that be liberal brainwashed college students, and that's literally 2% of the city's population. So hardly enough to turn is blue.