Usually the odds on betfair are as good of indicator as any but brexit was about 1.1 on the day of the vote and we seen how that ended up.
Definitely think Trump will have a group of silent voters who won't say they voted him due to fear of being labeled racist.
On a side note, personally think some of the media coverage on the election has been disgraceful. The likes of BBC reporting on both candidates side by side and using a nice photo of Clinton smiling compared to a photo of Trump crunching his face up (yes I know it's probably a struggle to find a decent photo of him). Personally think we should be expecting more from an organisation that is supposed to remain impartial.