To answer your question, your four top choices are all within range - unlikely, but not impossible - with Emory (in my mind) the best possibility if you are open to its Oxford campus.
You might try schools like Miami, William & Mary, Rochester, Wake, Brandeis - at the next level - and of course UF and FSU and/or UCF. UGA is strong in Intl Politics and you could try for the Honors program. Also, at U of SC which many rank the top.
You’re a reach for the top schools you listed - but it’s not impossible. With WUSTL you need to demonstrate interest.
Good luck.