The next logical evolution is to make your own Vocaloid using publically available speeches, and synthesize any soundbite you want.

Coming to you 2020: president candidate X may or may not have said that he hates women, kicks babies, love hitler, and plans to nuke Wales. You don't even care any more because your airwaves have been saturated with both candidates (and their Vocaloids) saying all kinds of crazy shit in disinformation and counter-disinformation and counter-counter-information campaigns and everybody's desensitized.