Stage readied in Delaware for Kamala Harris speech

Democrats' historic boundary breakers were set to join forces on third night of party's national convention.

Barack Obama, Hillary Clinton and Kamala Harris are all dressing virtual convention Wednesday night in an effort to mobilize diverse coalition Joe Biden will need to defeat President Donald Trump this fall.

Preparations were underway at Chase Center in Wilmington, Delaware, where Harris was set to deliver her speech.

Harris, Biden's running mate and first Black woman on a major party ticket, will deliver highly anticipated remarks that will serve as her introduction to millions of voters.