North Korean Elections – North Korean dictator Kim Jong Un was elected with 100% of the votes. The ballot listed only him. Citizens are allowed to cross out his name and write in a new one, but they must step outside the election booth to do so, and write down the new name in front of election officials.
It's nothing but a propaganda campaign.
and your last statement barely applies. those people are conditioned since birth to the cult of the kims and led to believe that their long hours and minimal living conditions are due to america persecuting them. in their eyes, kim is doing his very best to keep them alive despite everything. those who fail to share that full belief tend to disappear overnight, along with their families.
Also, you'll be surprised if you see the full picture of life in the _South_ Korea. About same degree of totalitarian control (say, they claim 150 000 dissidents to be missing in just 1979-87, when Chun Doo-hwan ruled the country) , but performed much differently.