“And this will gain votes for Bush exactly how? He’s in a no win situation. “
I think the idea is to be able to stay in the race long enough for other guys polling in low single digits to drop out.
Bush & Rubio have basically the same support group. Some of Fiorina’s support would overlap with Bush so the idea may be to to be the best of the worst and gain by consolidation.
For that to work he has to at least slow the Trump express down a bit.Right now Trump/Carson/Cruz are totaling about 60% of the vote and very little or any of those vote would fall to Bush so he has to get the Trump/Carson/Cruz triumvirate to each be about 20% so that the 35% he hopes to gain through consolidation will be the winner.
Just my thoughts