I'm sure they did. You can say that in a country that has actually taken the guns of most of its citizens and given a nod that if you don't vote for the leader for life....you're gone.President Un seems very popular in North Korea. During the last election cycle, his faction was elected unanimously and the electorate turned out for a 99.99% turnout- better than any other country.
Doesn't matter who you are. Authoritarian dictatorships are like that.