Bernie Sanders Says 'My Job' Is to Make Sure Hillary Clinton Is Elected President

"It's not about the lesser of two evils,” he told "Good Morning America."

As for Clinton’s running mate, Sanders said he doubted he would be on her ticket, but that he planned to help her campaign, nonetheless.

“Right now, what my job is to do to make sure that Hillary Clinton is elected president, that we defeat Trump and come up with a set of principles and an agenda that speaks to the needs of working families,” he said.

Sanders did offer some advice for the former secretary of state, who, according to news polls, is neck and neck with Republican presumptive nominee Donald Trump in key battleground states.

“I'll let justice Ginsburg answer that herself,” Sanders said when initially asked about it this morning.

“Let me be very clear, I agree with what Justice Ginsburg said. I think that Trump is a total opportunist,” he added. “I do not believe anything that comes out of his mouth, because I think the record is quite clear that he lies just a whole lot of the time.”