Why the mayor of the US's biggest city broke his vow to stay neutral — and endorsed Obama

Though Bloomberg had sharp words for Obama, in the final analysis it was the president who withstood his critical scrutiny across the board — and Mitt Romney who failed it.

...When I step into the voting booth, I think about the world I want to leave my two daughters, and the values that are required to guide us there. The two parties’ nominees for president offer different visions of where they want to lead America.
     One believes a woman’s right to choose should be protected for future generations; one does not. That difference, given the likelihood of Supreme Court vacancies, weighs heavily on my decision.
     One recognizes marriage equality as consistent with America’s march of freedom; one does not. I want our president to be on the right side of history.
     One sees climate change as an urgent problem that threatens our planet; one does not. I want our president to place scientific evidence and risk management above electoral politics...