Ok, which others of the 800+ international observers from a whole array of ideologies and countries have found and documented any serious irregularities in the election process? Afaik, only Carter “foundation”, which is extremely US-centric and has clear pro-US bias has tried to make such claims, without any substance behind them. And, believe it or not, the burden of proof when calling for violent riots against election results, is on the people claiming that the elections were rigged.