"市長に選ばれる人は誰でも少しねじが緩んでいる。"

Simplified Meaning:

Being the mayor of a city is a very tough job, and it involves dealing with a lot of problems and stress. To want to take on such a challenging role, a person might have to be a bit unusual or out of the ordinary. This might mean they are very passionate about fixing the city's issues or that they enjoy the power and responsibility, even if it brings them a lot of headaches. Imagine someone who decides to be a city's mayor. They would need to handle public complaints, make difficult decisions, and sometimes face criticism from the people they are trying to help. This can be very overwhelming and not everyone would choose to put themselves in such a position. That's why it might seem like you have to be a bit odd or different to want to be a mayor. For example, think about someone who runs into a burning building to rescue someone. Many people would be too scared to do that, but a firefighter does it because they believe it's important, even if it's dangerous. Similarly, a mayor takes on a difficult job because they believe it's worth it, even if it's really hard. People can use this idea to understand that sometimes, doing something important or helpful means being brave and dealing with things that aren't easy. It also reminds us to appreciate those who take on tough responsibilities for the benefit of others.