I really feel for you. That politician has had a long record of unacceptable behaviour, to be honest he should not be in a position like that - he obviously cant handle the stress without it triggering his condition. Personally I am skeptical he even has bipolar, its only once he has done something really bad that he all of a sudden has a mental illness that excuses his bad beahviour. You are not overthinking nor being irrational, you are actually being proactive in trying to get yourself well before you get worse, well done.

It would be a bad time to disclose your bipolar. But is there anyway you could get stress leave without mentioning that it is bipolar related? Some people can get 2 weeks off stress leave from their GPs. If you really want to work at getting better perhaps you could find a 2 week inpatient CBT course or something along those line that will give you a rest from work and home life but have you focusing on being well in the long run.

Does this help at all? What problems would you encounter with a plan like this?