LAS VEGAS (AP) Big crowds, go-to applause lines, talk of joy and some unsolicited Republican counterprogramming.

These were common themes during the first big campaign swing for Vice President Kamala Harris and her running mate, Minnesota Gov. Tim Walz, as the new Democratic ticket barnstormed through five battleground states this past week on a get-to-know-us tour.

They opened with a boisterous rally in Philadelphia on Tuesday, hours after Harris announced Walz as her running mate. From there it was a march through Wisconsin, Michigan, Arizona and Nevada. Planned stops in Georgia and North Carolina were washed out by Tropical Storm Debby.

The tour was a way to help both candidates introduce themselves to voters, especially independent and undecided voters in states where the Democrats are in tight races against Republican nominee Donald Trump and his running mate, Ohio Sen. JD Vance .

It was also a way for Harris and Walz to get to know each other better.

A look back at the campaign swing:

Size matters

Thousands of people have been flocking to Harris campaign rallies, a sign that her groundbreaking candidacy has generated new momentum among Democrats who were unenthused about President Joe Bidens reelection bid . Harris is the first Black woman and first person of Asian descent to become a major political partys nominee for president.

By the campaigns count, 12,000 people turned out for rallies in Philadelphia and Eau Claire, Wisconsin. It was 15,000 in the Detroit area and in Glendale, Arizona. In Las Vegas on Saturday, more than 12,000 people were inside a university arena when authorities halted admissions because people were becoming ill waiting outside in 109-degree heat to go through security. About 4,000 people were still in line when the entrances closed, the campaign said.