Clinton, Trump swung between personal blows and threats in 2nd debate

Donald Trump and Hillary Clinton came out swinging in the second presidential debate at Washington University in St. Louis Sunday night.

The debate featured a town-hall format in which Trump and Clinton fielded questions from both a moderator and members of an audience composed entirely of uncommitted voters selected by the Gallup Organization.

Here's CNBC's latest debate coverage and analysis:
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Heading into this debate, Clinton led the race by an average of 3.7 percentage points, according to a RealClearPolitics average of recent national polls including third-party candidates Gary Johnson and Jill Stein.

Many pundits said the first debate went poorly for Trump, who elicited laughter when said he has a "much better temperament" than Clinton. The New York businessman later claimed he held back on making "inappropriate" comments about Bill Clinton. During that first face off, the Democratic nominee slammed Trump for perpetuating a false claim that President Barack Obama was not born in the United States.

Update: This story was updated to reflect the most recent RealClearPolitics average of recent national polls.