What Biden's questionable performance at LGBTQ town hall says about his campaign

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On Thursday, nine Democratic candidates took part in an LGBTQ forum in Southern California. One of the three front-runners, Bernie Sanders, was absent. He was continuing his recovery from a heart attack.

So the focus was on the other two leading candidates: Elizabeth Warren and Joe Biden. Warren had a quick comeback to a tricky question about gay marriage. But Biden had several awkward moments. Will those gaffes hurt his campaign?