Today is the first day of the Democratic National Convention in Philadelphia. Reporter Ben Bradford is live from the convention joining us today on Insight to preview the coming week.

He says boos and cheers were mixed together when speakers were calling for party unity. One such speaker was Rep. Barbara Lee (D-CA) when she spoke to the crowd at this morning's breakfast.

Speakers later tonight at the convention include Sen. Bernie Sanders, First Lady Michelle Obama and Sen. Elizabeth Warren.