Before Hillary Clinton and Bernie Sanders took the stage, hecklers at the state's Democratic Party convention on Saturday interrupted the DNC head, who has been criticized for not adding more debates.
The biggest conventional names in American politics — Clinton and Bush — have stumbled this summer as Americans look to channel their frustrations through unconventional outsiders.
The vice president's allies may be talking up a presidential bid, but recently Biden has made clear he's still very much reeling from the death of his son and isn't emotionally ready yet.
Hillary Clinton tried to rally important Democratic delegates to her side at the party's summer meeting in Minneapolis. But, as she looks increasingly vulnerable, rivals are pressing their own cases.
History hasn't been kind to late presidential entrants. But with the vice president's name recognition and position, his campaign could break the mold and challenge and sharpen Hillary Clinton.
A White House spokesman won't rule out the possibility of the president choosing sides in a presidential primary, even if it's a race between his former secretary of state and his vice president.
With this many candidates running for the White House, gaffes are inevitable. This week, Republican presidential contenders Ted Cruz, Mike Huckabee and Rand Paul have all fallen victim.
"It's not all that difficult, folks, to be compassionate when you've been the beneficiary of compassion in your lowest moments," the vice president told Yale graduates in May.
The former Delaware attorney general is being treated at the Walter Reed Medical Center in Bethesda, Md. In 2013, he underwent surgery after being diagnosed with a brain lesion.