It is looking like telling lies is the prerequisite of becoming a politician. As a matter of fact, there is a way you will tell lies that people will start suspecting you to be a politician. How we get to this point in human history is what no one can explain.
I don't know about your country but in my country, politicians buy over media empires to sell lies and propaganda to the public... I know this is not peculiar to my country. This may be the reason there is a growing distrust between the leaders and the followers.
But is politics supposed to really be about lies? Why is the polity dominating by propaganda?
Politics itself is what we call lies, the reason why I said Politics itself is called a lie is because since I was a kid in my country till now that I'm 23 years old I have never seen any polician make a promise in public and after winning the election he will fulfill his promise, lie in Politics have become something that is part of what makes some people win the election, my country has failed many times when electing good leaders, we always fail to choose the right person all in the name of lie and promises they made, sometimes if you remember what those who claim to be our leaders today promise us you will feel like doing something that is not good but even if you try that the power is still in their hand.
A full-grown man can stand in public and swear to the extent of taking an oath and making a promise to the people just for him to win the election but after the election, they will not even remember those he promised and the oath they took and that is why some of them will never end well until he dies, to lie to people and make a promise to the poor is a very risky thing because you don't know what some people are capable of doing and every time our leaders keep lying just to be the head of our country and squander public funds.