Democrats unleash an onslaught of attacks, aiming at Bloomberg

Associated Press Former New York City Mayor Mike Bloomberg, left, listens as Sen. Elizabeth Warren, D-Mass., speaks Wednesday during a Democratic presidential primary debate in Las Vegas.

LAS VEGAS — The Democratic presidential candidates turned on one another in scorching and personal terms in a debate Wednesday night, with two of the leading candidates, Sen. Bernie Sanders and Michael Bloomberg, forced onto the defensive repeatedly throughout the evening.