Hey! I would contact the department about your questions regarding the availability of TA positions. I had a similar note in my funding package (in the US) and freaked out. Then I spoke with the department and they said while there is a note that it's not guaranteed.... it basically is and there's no way I wouldn't get it for the years outlined.
No idea if it would be similar, but I heard faculty at UC Riverside that they send out acceptances "in batches", meaning they have a sort of unofficial waitlist to see if people from the first round decline.
I've heard that it is a good idea to get back into contact with POIs and let them know you are still interested and thank you for their interviews, etc. I think you can express genuine continued interest and say it is your top choice for X, Y, Z reasons without letting on you've been rejected (or accepted) elsewhere.
I can finally claim a Duke rejection! they were sending update to an incorrect email haha. Also want to thank you guys for keeping this place active. It helped me feel less alone during this cycle.
I just wanna say that there are also plenty of IR programs and Theory programs (in the US and otherwise) that may offer what you're looking for! Don't force yourself to learn quant if it's not your interest. On the other hand, it could be.
It took me a couple application cycles to really identify fit as well, since I don't fall into what is considered traditional/popular areas of research in political science. I'd start by talking with professors you admire and looking up where they went to school.
Let's hope for the best! I applied to PhD which gives me a better shot at funding with them, but it will be an automatic decline if I'm not offered any.