I don’t think they’re thinking that far ahead. What’s right in front of their noses is the necessity to defeat Trump. War-monger, neo-con Hillary would be a far lesser evil, from their point of view. Open borders, middle-east wars that use Islamists as tools, hand-outs to businesses in which they are invested, what’s not to like?
They may prefer the policies, but they will be in the back of the bus in a Hillary government. I think it is a power play to wrest back control of the Republcan Party for 2018 and ‘20. If Donald wins, they have lost it forever.