Can anyone tell me why coal miners and farmers believe that Trump who has never set one foot on a farm or mine represents them?

They're brainwashed.

There could be many reasons, but I believe exposure to harmful chemicals and pesticides may be to blame for decreased intellectual abilities.

The farmers find it hard to understand why some people feel they have a right to the food they raised or grew.

because he’s president and CAN

he tells them what they want to believe; that all their problems are somebody else's fault, and that the solutions are simple

same line of crap every populist wannabe dictator always uses on the poorly educated mobs they pander to

Trump is a conman and they're not smart enough to see it

What kind of stupid question is this? What in your mind made you believe that this was an intelligent question?

He represents all American people. Unfortunately, that's as good as it's going to get. Who was the last president to step foot inside a mine? Data does in fact show that 2000 coal mining jobs have been creating since Trump took office.