Michael Needham said outsiders are in touch with "conservative populist primary voters.”
“I do not accept the fact that I have been weak on this issue," he said.
“The worst part about this is her arrogance,” Christie said.
"I have let the leadership of the Democrats know," Sanders said.
The two are tied when voters' first and second choices are combined.
Clinton leads with 37 percent support. But Sanders is close behind at 30 percent.
"I have seen the agriculture industry almost destroyed in the state of California."
The unannounced appearance comes as the vice president considers a presidential run.
“I would rather have positive TV ads, absolutely.”
"At any moment, FedEx can tell you where that package is."