Harris and Walz hold Las Vegas rally as pair build on renewed 2024 enthusiasm | Kamala Harris

Kamala Harris and Tim Walz will wrap up their first week together on the campaign trail with a rally in Las Vegas on Saturday, as the Democratic party seeks to further galvanize its base and win over undecided voters in battleground states such as Nevada.

In what will be the vice-president and Minnesota governor’s fifth rally in five days, the pair will hope to continue building on the renewed wave of enthusiasm and engagement among some voters and organizers since Joe Biden stepped down from the presidential race amid growing concerns over his cognitive health and trained support for Israel’s war in Gaza.

A new, major poll by the New York Times and Siena College published on Saturday found Harris leading Trump by four points in three key states – Pennsylvania, Michigan and Wisconsin, reversing the downward trend for Democrats as Biden’s popularity and performance tanked.

Also on Saturday, Harris-Walz campaign spokesperson Lauren Hitt clarified to the Associated Press that Walz “misspoke” over a 2018 video about “weapons of war that I carried in war.” His recent rise has led many Republicans, including the vice-presidential nominee, Ohio Senator JD Vance, to question Walz’s military record.

Some of the criticism centered on comments by Walz in a 2018 video circulated on social media by the Harris campaign in which he speaks out against gun violence and says: “We can make sure that those weapons of war, that I carried in war, is the only place where those weapons are at.” The comment suggests Walz portrayed himself as someone who spent time in a combat zone.

Walz served 24 years in various army national guard units but he was never in a combat zone.

“Governor Walz would never insult or undermine any American’s service to this country – in fact, he thanks Senator Vance for putting his life on the line for our country. It’s the American way,” Hitt said.

“In making the case for why weapons of war should never be on our streets or in our classrooms, the governor misspoke. “He did handle weapons of war and believes strongly that only military members trained to carry those deadly weapons should have access to them, unlike Donald Trump and JD Vance who prioritize the gun lobby over our children.”

Harris-Walz’s introductory swing-state tour – with stops in Pennsylvania, Wisconsin, Michigan and Arizona – comes amid a string of new endorsements including on Friday the local affiliate of the Culinary Union, which represents 60,000 workers in casino resorts, hotels and restaurants in Las Vegas and Reno.

Also on Friday, in what will be considered as a significant coup, the historically politically neutral League of United Latin American Citizens (Lulac), the oldest Latino civil rights group, broke with tradition to endorse the Democratic ticket.

“The politics of hate-mongering and scapegoating Latinos and immigrants must be stopped,” said Domingo Garcia, the chairman of Lulac Adelante Pac, in a statement. “Latinos understand how much is at stake in this election, for not only our community but our democracy.”

On Friday, an estimated 15,000 people braved the 105F (40C) heat to attend the Harris and Walz event in Glendale, Arizona, a record turnout, according to her campaign, in a state the Democrats will need to throw everything at to win over the diverse coalition of voters that delivered them victory in 2020.

The candidates were introduced by Senator Mark Kelly, the Arizona Democrat and former contender for the vice-president nomination who is also a navy veteran and former astronaut.

In her speech, Harris focused on immigration and abortion, two key issues in the border state and nationally, and she addressed the state’s Indigenous communities who played a crucial role in Biden’s 2020 victory.

“As president, I will tell you, I will always honor tribal sovereignty and respect tribal self-determination,” she told the enthusiastic, welcoming crowd. Arizona is home to 22 Native American tribes, who account for just more than 5% of the population.

The vice president responded to pro-Palestinian protesters by calling for a ceasefire in Gaza and the freeing of hostages – a marked contrast to his tetchy response to a similar interruption at a rally in Detroit earlier this week, which frustrated some progressives who want the US to stop arming Israel.

“Now is the time, and the president and I are working around the clock every day to get that ceasefire deal done and bring the hostages home,” Harris said to cheers after briefly pausing his stump speech.

Meanwhile, Trump was in Montana on Friday to try to boost a close Senate race. Montana is another state with a large and diverse Indigenous community but it is reliably Republican, having voted for only two Democratic candidates since 1952. Trump broke from his usual rambling monologue to play two video collages of Harris in an effort to paint the former attorney general of California as a radical leftist.

In a sign of how Harris has shifted momentum in the election, analysts at the Cook Political Report recently changed their take on the winnability of some swing states, switching Arizona, Nevada and Georgia from “lean Republican” when Biden was the candidate to a “ toss-up” with Harris leading the ticket.