Answer: It isn’t profitable for a politician to keep his promises. It is advantageous if they are not implemented by others so he can appear before the voters again and again and speak about fulfilling their demands just before the elections because the main thing for him is power.
This is the reason why the government doesn’t benefit its constituents. So, only rely on the Kabbalists. They must keep their promises because power is not their goal but the means to attain the Creator.