It is Debate Night at last, the first showdown of the presidential campaign between Kamala Harris and Donald Trump.

We'll bring you the ABC News Presidential Debate Simulcast live right here on KCBS Radio starting at 6:00 tonight.

For more on this, KCBS Radio Insider Doug Sovern was joined by Martin Kaplan, an expert in political communications who is a professor at the USC Annenberg School for Communication and Journalism, where he directs the Norman Lear Center. He was chief speechwriter to Vice President Walter Mondale and deputy campaign manager of Mondale’s 1984 presidential campaign