CHICAGO (AP) — The Democratic National Convention’s third night showcased a familiar former president in Bill Clinton and introduced more Americans to Minnesota Gov. Tim Walz. He was little known outside his state until Vice President Kamala Harris selected him as her running mate. Walz used his background as a former teacher and football coach to put a home-town spin on the Democrats’ agenda of protecting individual freedoms and rejecting what they paint as the intrusive policies of Republican Donald Trump. Wednesday’s program also highlighted plenty of up-and-coming Democratic politicians and media mogul Oprah Winfrey, who gave an energetic speech in support of the party’s ticket.