Great write up on the NYT by Katrin Bennhold and Amanda Taub
I specifically like the bit:
In both countries, voters are upset about years of stagnant growth, declining public services, rising immigration and a generalized sense that their children will be worse off than they are. They feel that their governments have failed to tackle these problems — and that whomever they elect among the traditional parties, the outcome barely changes.
Governments operating without representing their constituents, if only humans had learned their lesson.