It is not important whether he does or not because the Hillary/Bernie voters do and that would be a key part of their campaign.
In 2008 we were told McCain was a maverick who could reach across the isle.........2012 were told Romney has the middle ground covered so it was a shoo-in.......2016 we're told principles don't matter, just elect Trump because he can win a state like NY (living here I can tell you the people of NYC do not like him and there's no way the city will vote for him) so who cares what he says, said, did, does, will do.
Sorry - Conservative principles are not living and breathing and they are not up for sale to the most wealthiest guy in the field.
He's a liberal. Short and sweet. You have the right to support him for sure. Just don't be surprised when his former registered Democrat, pro-abortion slip shows.