State tax filing

Thank you very much! I am moving mid-December so the election will not be an issue. I am a full-time student, working part-time when I return from school breaks. Most of the year I am at school in London, England. When I am not at school, my seasonal job is in Ohio, and my significant other is buying a house in Tennessee. My family is all still in Ohio, and when I am home from school I spend equal time between Ohio/Tennessee. At this time in my life, I have the choice to pick if my permanent residence is in Ohio or Tennessee, and I wanted to make the right decision that would have the least impact on my taxes. Thank you very much for your helpful response, I greatly appreciate it.