5 Reasons People Succeed at Joy, freedom and dumping Trump: 5 takeaways from DNC Night 3

Day 3 of the Democratic National Convention saw the party's vice presidential nominee, Minnesota Gov. Tim Walz, introduce himself to Americans in the keynote speech, as well as several heavy-hitters, in a night that stressed what the party calls the politics of "joy."

Here's a look at some of highlights and key takeaways, as the DNC gears up for the fourth and final night featuring Vice President Kamala Harris accepting the party's nomination for president.

Walz did his job in his convention speech. He touted his own background, rattling through his experience in the Army National Guard and as a high school teacher. "It was those players and my students who inspired me to run for Congress. They saw in me what I hoped to instill in them: a commitment to the common good," he said.  He also promoted his policy accomplishments, garnering particularly loud applause for his policy providing free breakfast and lunch in Minnesota public schools.

Walz said that while Republicans were banning books in schools, "we were banishing hunger in ours." And then, he served the duty of a loyal No. 2 -- boosting his boss. "If you're a middle class family or a family trying to get into the middle class, Kamala Harris is going to cut your taxes," he said. "If you're hoping to buy a home, Kamala Harris is going to help make it more affordable."

And then, in true "Friday Night Lights" fashion, he issued a call to action with a football metaphor.

"We're down a field goal, but we're on offense and we've got the ball," he said before touting Harris as the team leader. "We're driving down the field, and boy, do we have the right team."