There has long been speculation that US businessman Mark Cuban might run for president as an independent or third party candidate in 2020.
While there is a giant question mark over a potential presidential run, it's certainly clear that Cuban believes something needs to be done to break up the two-party duopoly:
https://twitter.com/mcuban/status/996943847673548800
And Cuban went on for several tweets about the need to unite as Americans and reject tribalistic politics and the two-party status quo: