How close did you grow up to Boston, or did your parents live in a city for a period of time? The closer you get to a city, the more liberal the population becomes, and there are some pretty backwoods areas of Massachusetts. My dad was conservative until he went to Boston College and worked at the bank collecting loans from the poorer sections of the city. Even Cape Cod had MAGA protesters yelling at the Bourne Bridge about the plan to house immigrants on the Air Force base for all 4 years of Trump’s reign of terror, and I could probably still find the Trump 2016 flag that I used to drive by all the time.