Barack and Michelle Obama will be tonight's featured speakers at the Democratic National Convention. They're expected to underscore just how high the stakes are heading into November. Also scheduled to speak is Doug Emhoff, who hopes to become the country's first "First Gentleman." And in what may be a first, Donald Trump's former Press Secretary Stephanie Grisham will speak in support of the woman trying to defeat the man she once worked for.  Learn more about your ad choices. Visit podcastchoices.com/adchoices