20 candidates, 2 nights. The first Democratic presidential candidate debates will be held in Miami, FL. on June 26 and 27. They will be aired on NBC, MSNCB, Â Telemundo, and affiliated networks. But who wants to watch alone? Join your Democratic friends for a watch party – both nights. Drinks are on you, but there will be complementary appetizers and desserts. Doors open at 8 PM, debate starts at 9 PM.