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HARRISBURG, PA – As Vice President Kamala Harris returns to Pennsylvania on Wednesday for her second trip in three days, a new poll is the latest to indicate an incredibly close race between her and former President Trump in the crucial swing state.

According to a Monmouth University survey, just under half of registered voters in Pennsylvania say they will either definitely or have already voted for the vice president and Democratic presidential nominee (42%) or will probably vote for her (5%).

An identical number will either definitely or have already voted for Trump (42%) or will probably vote for the former president and Republican presidential nominee (5%), in a separate question asked by the pollster.

The poll was conducted Oct. 24-28 and released on Wednesday.

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Democratic presidential nominee Vice President Kamala Harris speaks during a campaign rally at The Alan Horwitz

Democratic presidential nominee Vice President Kamala Harris speaks during a campaign rally at The Alan Horwitz “Sixth Man” Center on October 27, 2024 in Philadelphia, Pennsylvania. (Andrew Harnik/Getty Images)

With 19 electoral votes at stake, Pennsylvania is the largest of the seven key battleground states whose razor-thin margins decided President Biden’s 2020 election victory over Trump and which will likely determine if Harris or Trump wins the 2024 presidential election.

According to the survey, when third-party and independent candidates are factored into the results, Trump stands at 47% among registered voters in Pennsylvania, with Harris at 46% and 4% saying they’re definitely or probably backing another candidate.

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The release from Monmouth University on their new poll emphasized in the headline that in Pennsylvania “it’s really, really close.”

“The bottom line is this was an incredibly close race in September and remains so today,” Monmouth University Polling Institute director Patrick Murray said, as he compared the results of his new survey in the Keystone State with his previous poll in Pennsylvania.

Republican presidential nominee, former President Donald Trump

Republican presidential nominee, former President Donald Trump speaks at a campaign rally at The PPL Center on October 29, 2024 in Allentown, Pennsylvania.  (Photo by Chip Somodevilla/Getty Images) (Chip Somodevilla/Getty Images)

The pollster spotlighted that Trump “continues to have a significant advantage among white voters without a college degree – who make up nearly half of Pennsylvania’s voter pool “– topping Harris 60%-35% among this group.

But the survey indicates that Harris holds a large 58%-37% lead among white college graduates, and voters who are Black, Hispanic, and of other races (62% to 25%).

With six days to go until Election Day, the new survey follows other recent polls that point to an incredibly close contest in the Keystone State. A CBS News poll conducted Oct. 22-28 pointed to both major party candidates deadlocked at 49%.

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Pennsylvania, along with Michigan and Wisconsin, are the three Rust Belt states that make up the Democrats’ so-called “Blue Wall.”

Democrats reliably won all three states for a quarter-century before Trump narrowly captured them in the 2016 election over Democratic Party nominee Hillary Clinton to win the White House.

Four years later, in 2020, Biden carried all three states by razor-thin margins to put them back in the Democrats’ column and defeat Trump.

Both the Democratic and Republican presidential nominees, as well as their running mates, have made repeated stops in the three states this summer and autumn.

Harris made multiple stops Sunday in Philadelphia, the state’s largest city. And Trump held a campaign event Tuesday in Delaware County, in suburban Philadelphia, before holding a rally in in Allentown.

“I don’t like to speak too early, but you have to get out and vote because we … we want a big, beautiful number. We’re leading in every single swing state. Because, normally Republicans, they like to vote at the end no matter what you say, they like to vote at the end,” Trump said from the Allentown rally. 

Trump’s new pitch for early voting stands in contrast to his years of blaming the practice for what he continues to claim – without proof – that his 2020 election loss was due to “massive voter fraud.”

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Since Haris replaced Biden atop the Democrats’ 2024 ticket after the president dropped out of the race in July, Fox News found the vice president has visited Pennsylvania at least 15 times, as of Tuesday. 

Harris and Walz team up on the campaign trail for the first time since the vice president named the Minnesota governor as her running mate

Vice President Kamala Harris (right) and Minnesota Gov. Tim Walz team up for the first time on the campaign trail, hours after the vice president named Walz as her running mate on the Democrats’ ticket, in Philadelphia, Pennsylvania on August 6, 2024 (Fox News – Paul Steinhauser)

Philadelphia was where Harris first teamed up with Minnesota Gov. Tim Walz after announcing him as her running mate. And Harris hunkered down in Pittsburgh – the state’s second largest city – to prepare for her first and only debate with Trump, which was held in September in Philadelphia.

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Trump has also visited the state at least 15 times since the end of July, Fox News found. Trump’s history with Pennsylvania was underscored by an assassination attempt on his life July 13 in Butler, when a man named Mathew Crooks opened fire on Trump and his supporters. Trump was injured on the side of his head by the shooting, and two other rallygoers were also injured. Local man Corey Comperatore died protecting his family during the violence. 

Republican Sen. JD Vance of Ohio, Trump’s running mate, has visited the state at least 13 times since the start of August. Walz has visited Pennsylvania at least nine times since August, data compiled by Fox News found. 

Both campaigns have spent more than half a billion dollars on ads alone in Pennsylvania, the Philadelphia Inquirer reported last week. Democrats spent more than $294.7 million in Pennsylvania, while Republicans spent $243.6 million in the Keystone State. The funds spent far exceed ad buys in other battleground states, including Michigan, which trails Pennsylvania ad expenses by a combined $185 million. 

AdImpact, a leading national ad-tracking firm, reports that the Trump campaign has reserved $5.8 million in ad time to run spots in the final stretch ahead of Election Day, with the Harris campaign shelling out $4.6 million.

When Biden narrowly carried Pennsylvania four years ago, Democrats enjoyed a larger margin of registered voters compared to their Republican counterparts, at 4.2 million to 3.5 million. The data show that Democrats had a registration advantage over Republicans by 685,818 voters during the election that Biden won by 80,555 votes.

kamala harris and donald trump debate

Vice President Kamala Harris, right, and former President Donald Trump during their first and only debate, in Philadelphia, Pennsylvania, on Tuesday, Sept. 10, 2024. (Doug Mills/The New York Times/Bloomberg via Getty Images)

The GOP has whittled down that lead this year to a margin of 297,824. When comparing registered voters this election year to 2020, Democrats face a net loss of 257,281 voters, while Republicans have a net gain of 428,537 registered voters. 

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More than double the number of previously registered Democrats changed their party affiliation this cycle compared to the number of registered Republicans who left the party. Pennsylvania Department of State data shows 54,668 registered Democrats changed their party affiliation compared to 25,634 Republicans.

Besides being the biggest of the presidential battlegrounds, Pennsylvania is also home to one of a handful of crucial Senate races that will likely determine if the GOP wins back the chamber’s majority.

According to the Monmouth poll, Democratic Sen. Bob Casey Jr.  holds a slight edge over Republican challenger Dave McCormick.

Forty percent of those questioned said they would definitely vote for Casey, with another 7% saying they would probably cast a ballot for the senator. Thirty-six percent said they would definitely vote for McCormick, with 8% saying they’d probably cast a ballot for the Republican nominee.

Get the latest updates from the 2024 campaign trail, exclusive interviews and more at our Fox News Digital election hub.