Both presidential campaigns are focusing on workers this Labor Day, both in Detroit.

Minnesota Governor and Democratic vice-presidential nominee Tim Walz was greeted by cheers from the crowd as he spent time at the state fair with his new title, serving ice cream and taking questions from reporters.

"I think people are seeing that we're getting to talk about Minnesota across the country. Talk about the economy here," Walz said.

The economy remains one of the top issues for voters, something Vice President Kamala Harris addressed on the campaign trail in Savannah, Georgia, last week.

"Half of America's working population either owns, runs, or works in a small business. I mean, when we think about strengthening the economy as a whole, not to mention really investing in, like, the ambition and the dreams—all of that is what you guys are doing," Harris said.

Former President Donald Trump focused on immigration during his last campaign stop.

"They're coming into our country at levels that nobody's ever seen. And I've been saying for two years that this has got to stop," Trump said.

While both candidates talk about the issues, getting as many votes as possible in battleground states will be key to winning this election. The Harris-Walz campaign has opened more than 300 offices and brought on 2,000 staffers in seven battleground states.

The Trump-Vance campaign says its battleground operation is rolling as the former president looks to lay out his vision for Americans over the next nine weeks.