Vance and Walz visiting Arizona as early voting begins in the battleground state

Vice presidential nominees Sen. JD Vance and Gov. Tim Walz will campaign in Arizona on Wednesday as early voting begins in a state that could decide the presidential race and control of the Senate.

Both Vance and Walz will hold rallies in Tucson on Wednesday. Vance will also participate in a town hall later in the day in Mesa hosted by the Conservative Political Action Conference, while Walz will hold an event in Chandler with Senate candidate Rep. Ruben Gallego and Jim McCain, son of former Republican Sen. John McCain.

With less than a month until Election Day, the race between former President Donald Trump and Vice President Kamala Harris to win the battleground state remains tight. According to FiveThirtyEight's latest forecast, Trump leads Harris by just over 1 percentage point in the state.

The Trump campaign said Vance will encourage Arizonians to vote early in this year's election, a sharp departure from the rhetoric Trump used in 2020 when he questioned mail-in ballots and voting early.

The Harris campaign told ABC News it had launched a major effort to reach voters this week -- nearly 6,000 people signed up to canvass and phone bank with more than 200 events happening across the state.

Wednesday's swing for Vance is his third visit to the state since becoming Trump's running mate in July and Walz's trip is his second since he was picked by Harris to be her running mate in August.

Harris and Trump will also visit Arizona later this week -- Harris will campaign there on Thursday and Trump on Sunday.

In 2020, Trump narrowly lost the state to President Joe Biden by just over 10,000 votes. As ABC News has previously reported Trump attempted to pressure then-Arizona Gov. Doug Ducey to overturn the results of the presidential race.

Trump dispatched former Vice President Mike Pence to pressure Ducey to find fraudulent votes in the state, and while Pence did call Ducey multiple times in the aftermath of the election, he did not follow those orders.

Speaking on the "Ruthless" podcast last Thursday, Vance shared that he feels good about the campaign's chances in Sunbelt states such as Arizona, Georgia, and North Carolina, but that more work needs to be done in the Rust Belt states, including Michigan, Wisconsin, and Pennsylvania.

Arizona's first day of early voting also coincides with the Senate debate between Gallego and Republican Kari Lake in a race that will help decide which party controls the Senate in 2025.

Currently, Gallego leads Lake by just under 8 percentage points, according to FiveThirtyEight.

Lake, who lost the Arizona gubernatorial race in 2022, alienated many moderate Republicans by feuding with Ducey and upsetting supporters of the late Sen. McCain. Lake has also continued to deny the validity of the 2020 and 2022 elections but has changed how she approaches her campaign, trying to court those moderate Republicans she lost in 2022.

Ducey endorsed Lake in August, saying that too much is at stake in this election cycle.

"I will be voting for Republicans up & down the ballot in November -- and both Donald Trump and Kari Lake have my endorsement," Ducey posted on X. "Differences aside, there is too much on the line and only a Republican in the White House and a majority in the House and US Senate can ensure it."

A spokesperson for Gov. Tim Walz did not respond to ABC News' request for comment on this story.