Michelle Obama: "We have got to vote for Joe Biden like our lives depend on it"

Michelle Obama closed out the first night of the Democratic National Convention with a passionate plea to vote for Joe Biden. "If you think things cannot possibly get worse, trust me, they can; and they will if we don't make a change in this election. If we have any hope of ending this chaos, we have got to vote for Joe Biden like our lives depend on it," Obama said. Watch her speech.