नाड़ी शोधन प्राणायाम with कुंभक can help in controlling the lust/desires.
भस्त्रिका, बाह्य, कपालभाति increase downward movement of the वीर्य, but not if you’ve already gained self control.
So, do नाड़ी शोधन (not अनुलोम विलोम, difference being holding the breath as long as you can without gasping for it, also called कुंभक) for a year or until self control arises. You will know when it has arisen because you won’t suffer from स्वप्नदोष and an internal helpful force will wake you up at the right time, preventing it from happening: don’t be lethargic when you wake up and thus prevent it, instead do some more of this प्राणायाम after toilet and cleaning teeth, even in the dead of night. You will, from time to time, need to resist the urge; after several months this need to resist will weaken and you’ll gradually remain in the celibate state more naturally. Stay away from company which can affect this pursuit. Do not be disheartened when you lose semen in sleep initially. It is a gradual process. Yoga takes time, it runs in repeating cycles, every cycle will make you one step stronger.
Now the problem. The pranayama above (नाड़ी शोधन with कुंभक) will make you very calm, yoga asks you shun public platforms and is very ‘introvert’ practice, politics requires constant interactions and is an ‘extrovert’ practice. Unless you are enlightened before you join politics, there is serious risk of a downfall because power comes and corruption follows. If you get enlightened before entering politics, you perhaps would not want to enter it. As someone said above, focus on improving self, fighting corruption can make you lose progress made in yoga because unless you are enlightened already, perfect calmness of mind may get disturbed but calmness is needed to make progress.
Good luck though, noble goal, is achievable.