Vote-scanning machines are down in Cambria County, Pennsylvania, causing some complications for morning voters in a deep red county of the major swing state.

The Pennsylvania State Department said it is "in contact" with the county officials and is working to clear up the technical difficulties.

In the meantime, voters at the affected precincts are still casting paper ballots, which are being stored in a secure location to be scanned once the machines are up and running.

In 2020, Trump won Cambria County by roughly 37 points against Biden.

A couple of other instances of technical difficulties have been reported in other states, which have caused some voting delays, but the issues do not appear to be connected.

— Rebecca Picciotto

Florida has led the country in disenfranchising citizens with felony records. But Donald Trump, the only former president ever to be found guilty of criminal charges, should have no trouble casting his ballot in the Sunshine State.

That's because Trump was convicted in New York.

Under Florida law, an out-of-state felony conviction makes a person ineligible to vote only if they would also be ineligible in the state where were they were found guilty.

Trump on May 30 was convicted by a New York jury of 34 felony counts of falsifying business records related to a hush money scheme to pay porn star Stormy Daniels for her silence ahead of the 2016 election.

A New York law passed in 2021 allows for convicted felons to register to vote if they are not incarcerated. It also restores the voting rights of convicted felons upon their release from incarceration.

On Sept. 6, Manhattan Supreme Court Judge Juan Merchan ruled that Trump will not be sentenced in the hush money case until Nov. 26 — three weeks after Election Day.

Trump traveled back to Florida on Tuesday, and he is expected to cast his ballot near his Mar-a-Lago home in West Palm Beach.

— Kevin Breuninger

Trump 2024 senior economic advisor Stephen Moore and Former Obama campaign manager Jim Messina joined CNBC's "Squawk Box" to share their expectations for the presidential race and discuss the candidates' plans for the economy and businesses.

"This is the closest race I have seen since 2000, and I think anyone who tells you they know what's going to happen tonight is drunk," Messina said.

Moore said that he is "not a big fan" of Trump's highly-contested universal tariffs plan and claimed that while he thinks he would implement "very stiff tariffs on China," these proposals will be more akin to "negotiating tactics" with other countries.

— Ece Yildirim

Many investors worry how the markets may react based on who is elected president on Election Day, but experts at top financial advisory firms tell clients not to make any sudden moves in reaction to uncertainty.

In the long term, markets generally tend to do well, no matter who occupies the Oval Office.

Investment research company Morningstar recently evaluated how the S&P 500 has performed starting Nov. 1 in the past 25 U.S. presidential elections. Forward one-year returns were positive for 10 of the 13 elections where Democrats won, and in nine of the 12 contests where Republicans won, the firm found.

Forward four-year returns were positive for Democrats in 11 out of 12 terms, compared to Republicans who had positive returns in nine out of 12.

"Presidential elections historically have not been nearly as important to markets as most people think," said Mark Motley, portfolio manager at Foster & Motley in Cincinnati, which is No. 34 on the 2024 CNBC Financial Advisor 100 list.

— Lorie Konish

President Joe Biden declared victory in Boeing machinists' approval of a new labor deal, ending a 53-day strike that halted most aircraft production at a top U.S. exporter and military contractor and dented the last jobs report before Tuesday's presidential election.

The deal "was achieved with the support of my economic team, including Acting Labor Secretary Julie Su and National Economic Advisor Lael Brainard," Biden said in a statement.

"Over the last four years, we've shown collective bargaining works. Good contracts benefit workers, businesses, and consumers—and are key to growing the American economy from the middle out and the bottom up," he said.

The new Boeing contract for its 33,000 unionized machinists, mostly on the U.S. West Coast, includes 38% raises over four years, a $12,000 and a deal with the company that it builds its next aircraft in one of the unionized factories in the Seattle area. Workers go back on the job as early as Wednesday, though the company isn't out of the woods with several delayed aircraft programs including the late-arriving Boeing 747s that will serve as the next Air Force One airplanes.

--Leslie Josephs

Trump will host an exclusive election night dinner at Mar-a-Lago for club members and his top political donors, a source who received an invitation confirmed to NBC News.

The dinner is scheduled to take place after the Republican presidential nominee casts his vote in person. He then plans to call in to several tele-rallies, a person familiar with the planning told NBC News.

In the late afternoon, Trump will huddle with an inner circle of advisors, friends and donors, another source told NBC News.

When the race results start becoming more clear, the former president then plans to leave the resort and go to the Trump-Vance watch party at the Palm Beach Convention Center, in West Palm Beach.

— Rebecca Picciotto

Bernie Marcus, the billionaire co-founder of Home Depot and a major supporter of Trump's political career, has died at 95, the company confirmed.

Marcus led the Home Depot for more than two decades, both as its first CEO and as chairman of the board. His net worth at the end of his life topped $11 billion, according to Forbes. The company now boasts more than 2,300 locations and employs more than 500,000 people.

Marcus was an outspoken supporter of Trump and other Republicans. His philanthropic vehicle, the Marcus Foundation, donated $10 million to the pro-Trump Preserve America PAC in the 2020 election. His family foundation gave $7 million to a pair of pro-Trump super PACs in the 2016 election.

In the 2024 cycle, Marcus said he preferred Trump's Republican primary rival, Nikki Haley.

— Kevin Breuninger

Pollster and political strategist Frank Luntz on CNBC's Squawk Box this morning said he thinks Pennsylvania and Nevada will be too close to call on Wednesday morning, and that the general public will not know the results of presidential election until "either late Friday or early Saturday."

"If Trump loses either [Georgia and North Carolina], it will be a Harris victory. If Trump wins either Pennsylvania or Michigan, it will be a Trump victory," Luntz said.

Other metrics that Luntz is "watching keenly" are the Latino vote in Nevada and Arizona, whether conservative older woman will vote slightly more for Harris than they normally do for a Democratic candidate, younger women who are "more pro-Harris than any Democratic group," and whether or not today's polls will see a record-setting turnout, which would be "good news for Trump."

— Ece Yildirim

Harris and Trump tied the midnight race in Dixville Notch, an unincorporated community in a small New Hampshire township where there are six registered voters this year.

Three of those voters went for Harris while the other three went for Trump. The polls opened at midnight and closed at 12:07 a.m. E.T.

Since 1960, Dixville Notch voters have followed the tradition of submitting their votes in person in a wooden box just after midnight, before the results are announced minutes later.

Though the Dixville Notch result is not a predictive measure, the tradition has kicked off Election Day events for decades of night owls.

This year, the Harris-Trump tie happens to mirror the dead-heat race that polls have been reporting over the past several months. In 2020, President Biden received all five of the Dixville Notch votes cast before winning the overall race.

— Rebecca Picciotto

Shares of Trump Media & Technology Group are trading higher this morning as investors make some of their final bets on the former president's company in his final hours in the race against Harris.

The DJT stock was up roughly 9% at one point before the market opened.

The meme stock tends to fluctuate, but over the course of the election, it has often been viewed as a proxy gauge for Trump's chances at a second presidential term.

Wall Street analysts listed it as a stock to watch going into Election Day.

Read the full story here

— Fred Imbert and Rebecca Picciotto

More than 77 million Americans have already cast their ballots by mail or in person, according to NBC News' tally of the early vote.

That's far less than in 2020, when more than 100 million Americans voted early. But those results came in the middle of the deadly Covid-19 pandemic, when many Americans avoided public gatherings and states had greatly expanded absentee and early voting rules.

Trump criticized early voting in 2020 — a stance that may have helped President Joe Biden clinch several key swing states.

While Trump has at times waxed nostalgic about single-day voting in the 2024 cycle, both his campaign and Harris' have mostly encouraged their supporters to vote as soon as they can.

NBC's data, provided by TargetSmart, show Democrats slightly leading Republicans in the early vote tally, 41% to 39%.

Among the seven key battleground states, more registered Democrats appear to have voted early in three — Pennsylvania, Michigan and Wisconsin — while registered Republicans lead in Arizona, Nevada, North Carolina and Georgia.

What it all means for the final result is far from clear.

While early-vote figures are often viewed as a signal about certain voters' enthusiasm or expected turnout, it's hard to predict how many more voters will show up on Tuesday. It is also difficult to know ahead of time whether a party's early vote share is "cannibalizing" its Election Day turnout.

An NBC analysis found that among early voters in 2024 who did not vote in 2020, Democrats outpace Republicans in Pennsylvania, and female Democrats are the biggest group of new voters in the state.

In Arizona, however, there were more Republican new voters than Democratic ones, and male Republicans led the way.

— Kevin Breuninger

After storming Pennsylvania on Monday, Harris' Election Day schedule is relatively sparse — at least for now.

The only item on her agenda is an election night watch party at Howard University, her alma mater in Washington, D.C.

The campaign will hold an event at "the Yard," the main quadrangle on campus.

Walz and his wife, Gwen Walz, are also set to participate in a political event in Harrisburg, Pennsylvania, NBC News reported.

— Kevin Breuninger