A vice presidential debate that could really matter

Most vice presidential debates are forgotten soon after they happen. But not this year. With 74-year-old President Trump recovering from COVID-19 and 77-year-old Joe Biden mixing with people on the campaign trail, it is easy to imagine Wednesday?s debate combatants ? vice president Mike Pence and Sen. Kamala Harris ? having to step into the top job. Joe Garofoli, the San Francisco Chronicle?s senior political writer and host of the It?s All Political podcast, previews the debate.