In 1961, he ordered new elections despite the fact that his "term" wasn't up until 1963. The move completely baffled everybody until the results of the election, which saw Papa Doc win with 100 percent of the votes. Evidently he just wanted to make sure everyone understood that he just didn't give a fuck.
What happened to him?
Papa Doc eventually died in 1971 of natural causes, but not before telling the world that he alone was responsible for John F. Kennedy's assassination by way of a Voodoo curse. He even sent someone to Kennedy's grave to collect the air around it so he could use it in a spell to control Kennedy's soul. By all accounts, Voodoo is kind of awesome.
Was Oswald possessed by a Voodoo demon? Probably.