The US election has been reminding me lately about the classic Ray Bradbury time travel short story "A Sound of Thunder," wherein a time traveller inadvertently (by treading on a butterfly while dinosaur hunting) causes the world's time line to swap to a tyrant being elected.
I think this is a semi-plausible explanation of how a dangerously ignorant, conspiracy mongering doofus with the worst child-like personality traits can be edging close to becoming President.*
I'm not sure which organisation may be conducting time travel experiments at the moment (I wouldn't put it past CERN at the LHC, though), but they have to call a halt till after the election.
* I still don't believe he will win, though. I would still put that at "high confidence," too.
PS: I did Google to see if anyone else has been drawing a connection between this short story and this election - surprisingly, there seems to not be many, but there was one link to a person who wrote about this in August. It's really hard these days to be the first with an idea!