Hours-long lines at the polls, voting machine malfunctions, delayed absentee ballots, a shortage of provisional ballots, held-up results, and partisan sniping over which party was to blame – some of the major problems that plagued Tuesday’s primary in Georgia.

Across the country, results from Nevada’s primary were delayed until the middle of the night after voters waited in long lines even after the polls closed.

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With deep health concerns over in-person voting during the coronavirus pandemic, both states witnessed a surge in absentee balloting, adding an extra burden on election officials to accurately and as quickly as possible count the dramatic rise in ballots being received through the mail.

Steven Posey checks his phone as he waits in line to vote, Tuesday, June 9, 2020, at Central Park in Atlanta. Voters reported wait times of three hours. (AP Photo/John Bazemore)

Georgia and Nevada aren’t isolated cases. Primaries in Wisconsin, Pennsylvania, Maryland, and the District of Columbia were also plagued with similar problems.

With states strapped for cash and the massive movement toward voting by mail – both results of the pandemic shuttering much of the nation – some experts see the primary problems as a warning sign for things to come in November’s general election, when the presidency, control of Congress and some governorships and more are up for grabs.

Any sign of widespread election night problems would be sure to fuel criticism by both parties, and could be used to challenge the outcome.

“I think it’s a big red flashing siren that states and Congress need to take the November election really seriously if they’re going to prevent what happened in Georgia and Nevada and elsewhere from happening,” elections expert Michael Li told Fox News.

Li, senior counsel at the nonpartisan Brennan Center for Justice's Democracy Program, emphasized “it’s clear that states are not ready for this election.”

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Two former congressmen -- Democrat Tim Roemer of Indiana and Republican Zach Wamp of Tennessee -- are raising alarm over a potential "perfect storm of election chaos."

In a statement released by Issue One – an election reform advocacy group – the two former lawmakers warned that “this type of election chaos sows doubt in the outcomes of our elections and fosters the belief that our system is corrupt. Our country could be headed towards an illegitimate election if states cannot hold safe and secure elections where every eligible voter can participate.”

In Georgia, the problems mainly occurred in Democratic stronghold majority-minority counties. Republican state officials blamed local Democratic administrators for the mess, with Democrats pointing fingers back at the Republicans.

With the once solidly red state turning into a potential battleground this autumn, both presidential campaigns weighed in. Presumptive Democratic nominee Joe Biden’s campaign called the chaos in Georgia “completely unacceptable.” The former vice president’s campaign vowed to be “fully engaged” in the fight to ensure Georgians can safely vote in November.

President Trump’s campaign pointed to the surge in absentee balloting – which was urged by Georgia’s Republican secretary of state in order to try and limit long lines at the polls – as the culprit.

“The American people want to know that the results of an election accurately reflect the will of the voters,” the Trump campaign said. “The only way to make sure that the American people will have faith in the results is if people who can, show up and vote in person.”

The president for months has railed against the moves by states controlled by Democrats and some Republicans to expand voting by mail amid the coronavirus outbreak.

"MAIL-IN VOTING WILL LEAD TO MASSIVE FRAUD AND ABUSE," Trump said in an all-caps tweet late last month. "IT WILL ALSO LEAD TO THE END OF OUR GREAT REPUBLICAN PARTY. WE CAN NEVER LET THIS TRAGEDY BEFALL OUR NATION."

But the president has not followed up his repeated claims that voting by mail leads to massive voter fraud and favors Democrats over Republicans with proof.

The spotlighting of voter fraud by the president has Democrats warning of ulterior motives.

"It’s my greatest concern, my single greatest concern," Biden said Wednesday night in an appearance on "The Daily Show." "This president is going to try to steal this election. This is a guy who said that all mail-in ballots are fraudulent, voting by mail, while he sits behind the desk in the Oval Office and writes his mail-in ballot to vote in a primary."

Elections experts do say that voting by mail is more susceptible to fraud than casting a ballot in person, but they’ve seen no evidence of widespread fraud or that absentee balloting favors Democrats. But the massive increase in absentee balloting places an extra burden on an already stressed-out state and county election officials and on a U.S. Postal Service facing financial and manpower deficits.

“States are going to need additional resources to make sure that the election works right,” Li highlighted. “If you’re going to have a ton of mail ballots, you’re going to need to have a lot more people process the applications on the front end, check signatures on the back end, and do all of the stuff that you need to do with mail ballots because there’s more steps.”

As the coronavirus was sweeping the nation in March, the Brennan Center proposed sweeping changes to current voting practices across the country – such as universal mail-in voting, ballot drive-by drop off boxes from coast to coast, and easier online voter registration – to make voting in November safe.

But their plan isn’t cheap – with a price tag at roughly $2 billion.

To date, Congress has passed and the president has signed into law $400 million in federal funds to help the states improve their election systems.