How Does That Work, Exactly?

In a surprising presidential election in Turkmenistan, Kurbanguly Berdymukhamedov won only 89% of the vote. Mr Berdymukhamedov had been acting-president since the death in December of Saparmurat Niyazov, who had ruled the country for more than two decades. The opposition was not allowed to field any candidates.

If you're the only person being voted for 1) what's the point? 2) How do you get anything other than 100% of the vote?