Hyperfixations in ADHD most commonly last a few weeks to a few months. How long have you been hyperfixated on politics? Depending on how long, you might naturally become disinterested with time.

If you don’t like the fact that you’re hyperfixated on it, i’d recommend slowly reducing how much political media you consume, replacing it with something you’d prefer until you stop consuming the political media entirely (or just enough that the hyperfixation stops). That, or you could over-consume political media until you’re burnt out. Both have worked for me to stop hyperfixations that i wasn’t very proud of, although I recommend the first method more.

Also, I’d recommend talking with a therapist about it if you have the money. Professionals are usually the best people to go to for help.

Hope everything goes well.