I am sorry that you fiund yourself here but wanted to tell you that you are doing a great job given the situation. You are focusing in yourself and your D. Although my H is not a politician, h needs constant validation to boost his ego. The OW provided the constant validation he needed. When I asked to spend more time with the family he would just mention what he bought us. The kids and I did not care about things and just wanted his time. It makes me so sad to see him looking for validation in all the wrong places. I really think that under their fake smiles, they are really insecure and quite lonely.
Good luck with the job interview. Keep posting because you will find a lot of great support here.