When does a leader go wrong? One thing is certain: good fortune can quickly turn sour after one bad decision, and repeatedly making poor decisions can only make matters worse. These once-respected leaders have fallen on hard times after making a few ill-fated moves.

We rounded up some of the biggest fumbles by politicians and business executives over the past year and assembled a list of the World’s 19 Most Disappointing Leaders. But we want to know, which one is the most disappointing. It’s your turn to decide.

Which of these leaders’ fumbles is most egregious? Governor Rick Snyder’s handling of the Flint water crisis? Or Dilma Rouseff’s corruption scandal in Brazil? Or Marissa Mayer’s growing problems at Yahoo? Use the app below to rank our list of dubious leadership moves and tell us who disappointed you the most. Click or tap on the arrows to bring your choice to the top.