I strongly believe AI systems will eventually be essential in most governmental decision making because it is technologically possible and political organization is malleable.
The current narrow AI systems have proven superiority against humans in logical, intuitive and deceptive games such as Chess (Deep Blue 1996), Go (AlphaGo 2016) and Texas Hold'em Poker (Libratus 2017). What makes politics so special? It's just a far more interesting game.
Are there too many variables to consider? Well, humans can't consider all of them either and computers can still make better estimations. Computers don't have freedom of will? Thank Turing they don't so we can take full advantage of these lifeless electric brains for the benefit of humanity.
A more intriguing implication is that we're now dealing with human lives. How can we declare the value of a real person? Although there is no consensus on ethical philosophy, Utilitarianism (maximizing overall happiness) could be the basis of this moral machine because it can make good use of high computing power and deliver ethical solutions in jurisdiction and legislation.
Only if a single country with a good-hearted leader took a leap into thesethis new regime, the whole world would be obliged to follow this trend as it would skyrocket national growth.