Bloomberg wrote, "There is a good chance that my candidacy could lead to the election of Donald Trump or Senator Ted Cruz. This is not a risk I can take in good conscience."
Bloomberg accused his fellow New York billionaire of running "the most divisive and demagogic presidential campaign I can remember."
Joining us are political analyst and pollster Doug Schoen, who conducted a poll for Bloomberg when he was considering a presidential run, and political consultant Hank Sheinkopf.
$27 billion. That's the budget of the New York City schools system, bigger than the budgets of nearly 30 states.
Running it is an enormous and enormously pressure-packed job.
So what does the Chancellor of the schools do after he leaves?
In the case of our guest, Dennis Walcott, he goes to the library. And becomes it's CEO.
Also, it's still winter, but for many, summer is on their minds.
New York City is now taking applications for summer jobs.
More than 54,000 young New Yorkers worked at 9,000 work sites last summer.
I asked the man in charge, Bill Chong, to explain how the program works and why it narrows the inequality gap.
For more information, visit http://www.nyc.gov/dycd or follow on Twitter @nycyouth.