Barbara Perry, Director of Presidential Studies at the University of Virginia's Miller Center, shares her insight on Vice President Kamala Harris' conduct and her policies from her first sit-down interview since becoming the Democratic Presidential Nominee. Perry also talks about Donald Trump's recent conduct and when referring to Harris, whether or not "vibes" or momentum could be used to win a Presidential election. She also weighs in on the September 10th Presidential debate and how consequential it may be. Barbara Perry speaks with Kailey Leinz on Bloomberg's "Balance of Power."