For posterity, here's my Facebook post from 21st January, 2016:
"We can mock Donald Trump and his supporters, like Sarah Palin, all we like, but for all that it's starting to look dangerously like he could actually become President of the USA and thus the most powerful person in the world.
What kind of world will we be heading for if that prospect eventuates?
This is no time for complacency of the "surely the voters couldn't be that dumb" variety.
So if you're a US voter with an IQ over 70, the rest of the world is depending on you to do the right thing. We outside the US will all be affected by your choice of President."