Vice President Kamala Harris and her running mate, Minnesota Gov. Tim Walz, are set to play up their support for organized labor during an appearance at a Detroit-area union hall as the new Democratic ticket lavishes attention on a crucial base of support. Harris is expected to speak at 3:10 p.m. EDT. Watch live in our player above. Harris, the Democratic presidential nominee, and Walz, who joined the ticket on Tuesday, plan to speak on Thursday to several dozen United Auto Workers members.