Vice President Kamala Harris says Donald Trump is "going to lie" during the debate Tuesday evening. Also, Sen. John McCain's son endorses Harris for president. Plus, some in the media are "sane-washing" Trump's incoherence. And Michael Eric Dyson discusses his new book, " Represent: The Unfinished Fight for the Vote." Quentin Fulks and Sen. Mark Kelly also join Lawrence O'Donnell.

Vice President Harris hits Donald Trump's "concepts" of a health care plan. Also, reproductive rights are a key issue in the Ohio Senate race. Plus, Sen. Rick Scott refuses to commit to debating his Dem opponent. And NYPD Commissioner Edward Caban resigns. Anderson Clayton, Sen. Sherrod Brown, and fmr. Rep. Debbie Mucarsel-Powell join Lawrence O'Donnell.