Here’s What to Expect at the Democratic National Convention on Day 3

Gov. Tim Walz of Minnesota will speak to the largest audience of his political career on Wednesday night at the Democratic National Convention, where he will formally accept the party’s nomination for vice president. His speech, on Day 3 of this week’s political coronation at the United Center in Chicago, will be the biggest test so far since Vice President Kamala Harris made the decision to put the jovial, blunt-spoken Midwesterner on the ticket.

Before Mr. Walz’s keynote speech, former President Bill Clinton is scheduled to whip up the crowd, two days after his wife, Hillary Clinton, energized the delegates with a passionate plea for Ms. Harris to finally break the presidential glass ceiling.

Here’s what else to watch for on Wednesday: