This professor has a speech impediment not dissimilar to a lisp. If that's something you can't handle, then maybe wait for a different professor. Bau is, however, an incredible communicator. She understands questions intuitively and tries her hardest to explain difficult concepts in simple ways.
Her problem sets and tests are easy if you are math person, hard if you are not. I was able to get most questions right simply by listening to lectures and applying the simple algebra necessary to apply the economics rules to a given graph or set of data. Keep your notes organized and go to lecture / read the textbook and you'll be fine.

Honestly if you are not a pub aff major, just dont take the class. There is no point in taking this as a sub for econ or a ge just dont. Take econ 1 or 2 (whichever is microecon) instead. If you have to take her, dont bother going to her office hours because she is no help. The TA's were even confused about her lectures too. THE LITERAL TA's!!!!

I took this class to complete the Public Affairs minor, and let me just say that it could have been way better than the experience I had. The worst part were the four problem sets that were worth 10% each, amounting to a ridiculous 40% of your grade. The professor thought she was doing us a favor by making them harder than the material on the exams... why not just make them similar to the exams and save your students the headache?
Professor Bau seems to think she explains the material well but this is probably because the material is familiar to her. As someone with no economic background, I found myself struggling in this class and having to consistently go to office hours to do decently enough to pass. I'm guessing the curve was generous if I got a B.

If you can avoid this class, my advice would be to do so.

This is a difficult class if you have no background in economics. The lectures and material move along pretty quickly and each concept builds on the previous one. The readings are not really necessary unless you have never taken any economics class and can't keep up with the professor.
The professor is not that bad. She simply has too much material to get through so she has to go fast. If you go to office hours she is really informative.
The tests are way easier than the problem sets.

This professor literally could not be worse. My study group and I had to teach ourselves the entire class as her lectures were unorganized, uninformative, and a genuine waste of time. Luckily, the TA’s were nice and more knowledgeable on the subject. There were also four problem sets of homework that were extremely hard (especially when the professor doesn’t know how to teach the class.) I’m not sure if this was just because this is the first time the course has been taught, but it was terrible. Overall interesting stuff once you can actually learn it, but I would not recommend taking this class unless it is taught by a different professor.