It's time now for Ask An Expert, every weekday at 9:20 AM on KCBS we're giving you direct access to top experts in various fields.

Today, we're comparing this year's presidential debates with debates from past elections—ahead of tomorrow's showdown between Donald Trump and Kamala Harris. With staunch support on both sides, the candidates will try to appeal to moderate voters and undecided Americans.

For more, KCBS Radio's Margie Shafer and Eric Thomas were joined by John S. Jackson with the Paul Simon Public Policy Institute at Southern Illinois University.

If you have a question you would like answered please email us at: AskUs@KCBSRadio.com.