It doesn't matter. All that matters is who gets the majority of Electoral votes. 270 is the magic number assuming there are only two candidates. If there are three, then you don't need 270, just the majority.
In all honesty, even with faithless electors, it's highly unlikely that Trump will not win the Electoral votes needed. So far, seven Democratic Electoral voters (votes that would be going to Hillary anyways) have announced they will be voting for someone else, which actually only helps Trump. The one Republican voter not voting for Trump on his own isn't going to do a thing to stop Trump's inauguration. There would have to be a very serious and more organized, concerted effort than what we're seeing to pose a serious threat to Trump's presidency. Plus, it's never happened before in our nation's history, and if it did happen...well, things would get ugly. So ugly that the protests and riots after Trump's win would pale in comparison.
That being said, these are strange times. I think it's highly unlikely that Trump won't secure more than enough Electoral votes needed, but considering everything else that happened this year...all bets are off. Anything can happen.