"If we don't do well in California, it will make our path much, much harder."
"I'm knocking my brains out to win the Democratic nomination," Sanders said.
Sanders said his contributions would increase fivefold in a general election match-up.
Sanders said the flip-flopping shows “who Donald Trump is.”
"It is truly one of the greatest crimes ever," Trump said.
Johnson was at odds with his fellow candidates and was booed several times.
Sanders urged Clinton to choose a VP outside of the Wall Street circle.
Sanders rejected Donald Trump's frequent claim that the system of both parties is "rigged."
Bob Dole encouraged other Republicans to "get on the train."
McAfee said the party had to focus on making the biggest impact before November.