In my opinion, politics lacks morality, which is why, regardless of a child's moral character, the system corrupts his thinking the moment he chooses to enter the field. By the time he holds a position, his main concern is how to accumulate enormous wealth for himself.
Because of the way politics are perceived in the nation, a lot of money is spent on electioneering, winners often reimburse themselves after winning, and many godfathers receive settlements.
Ultimately, the person who was raised with moral values starts to display corrupt tendencies. Until the system of politicking is changed and corruption is tackled generally, the individual cannot act any different.