I can see him taking votes from both sides. You might not realize this, but there are people who absolutely will not vote for Trump, I am one of them, and probably will not vote if he is the nominee. There are also many who will not vote for Hillary, which is why Sanders has been competitive. So in some peeps mind, Bloomberg may be the most rational choice and alternative.
Some conservative.. Supporting a gun grabbing nanny state liberal..smh. I knew Trump would expose many as hypocrites.