PHILADELPHIA — Governor Tim Walz will officially be introduced as Vice President Kamala Harris' running mate during an appearance Tuesday evening in Philadelphia. It's the first campaign appearance for the two since Harris announced that the Minnesota governor would join her atop the Democratic ticket. "As a governor, a coach, a teacher, and a veteran, he's delivered for working families like his," Harris posted on social media.

"It's great to have him on the team. Now let’s get to work. Join us.

" Harris posted video of her calling Walz to officially ask him to be her running mate. "I would be honored, Madam Vice President," Walz said in the video. "The joy that you're bringing back to the country, the enthusiasm that's out there, it'll be a privilege to take this with you across the country.

" When I called @Tim_Walz this morning to ask him to join our campaign, I shared my deep level of respect for him and the work we've done together. We're going to unify this country and we're going to win. Let's go get this done.

pic.twitter.com/EcqZ497lyk In the video, Harris responded by telling the Minnesota governor how much she respects him, and how much she's enjoyed working with him.

"You understand our country," Harris said. "You have dedicated yourself to our country in so many different and beautiful ways." Before Walz held the state’s highest office, he lived in a small town in northern Nebraska, where he joined the Army National Guard at the age of 17.

He served in the G.