President Joe Biden and former President Donald Trump are set to take part in a presidential debate under unique circumstances. First, the event is happening before the Democratic and Republican parties can formally nominate the candidates at their respective conventions. Plus, the Commission on Presidential Debates – the body that oversees and sets rules – will not be involved. Kathryn Brownell teaches history at Purdue University. She joins Soledad O’Brien to discuss the evolution of presidential debates and why it’s still important for voters to tune in.
