In the battleground state of Pennsylvania, election officials have been preparing for months for millions of residents to cast their highly anticipated votes.

But those election officials have also quietly been preparing for another possibility: an onslaught of litigation that could flood the courts on Election Day and beyond.

"We are the biggest swing county in the biggest swing state, so we are very conscious of the fact that we have a lot of eyes on us," Bob Harvie, the Democratic vice chair of the Bucks County Board of Commissioners, said in an interview with ABC News.

Bucks County -- a Philadelphia suburb that former Trump narrowly lost by less than a percentage point in 2016 and by about 5% in 2020 -- has been sued 11 times since the 2020 election, according to Harvie.

Now they are "bracing" for a repeat, he said.

Read more .

Gov. Tim Walz said Tuesday that Harris' speech at the Ellipse would be "spectacular," while adding that it isn't "by chance" that she's delivering her campaign's closing message there.

"Vice President is going to give a spectacular speech tonight on the Ellipse, and it's not by chance that it's there, because she's going to highlight the promise of America versus the chaos," he said at Iron Black Coffee Co. in Columbus, Georgia, where he was meeting with the Educators for Harris-Walz coalition.

-ABC News' Isabella Murray

Officials in Maricopa County, Arizona, the fourth largest county in the country, said Tuesday they’ve been planning for years to secure polling locations and the tabulation center on Election Day.

The county, which has been at the center of election conspiracy theories and threats since 2020, will have one of the most intense security operations in the country with patrols on horseback and drones for surveillance and security cameras, according to Maricopa County Sheriff Russ Skinner.

Skinner told reporters there haven’t been "a lot of threats" this year but expects to see more as Election Day approaches and in the days after.

"There is no place in politics or this process that criminal activity is allowed and there is zero tolerance that we as public safety will take in relative any type of criminal act or any type of issue that arises," Skinner said. "We want this to be a safe and secure process."

During the press conference, Maricopa County Supervisor Bill Gates said that an individual with a hidden camera recently recorded a county training and posted videos and photos of election workers on social media.

"Election workers are off limits, they should be off limits," Gates said. "They should not be threatened. They should not have their names and images put out there. And I have full confidence we're not going to see that from this point on."

Gates added that the county has received over 1 million early ballots and said that for the first time since 2006, there will be a two-page ballot which will mean it will take more time than usual to fill out ballots.

The county has increased the number of voting booths and staff to mitigate long lines at the polls.

-ABC News' Laura Romero

Several Puerto Ricans in battleground Pennsylvania say the controversial comments a comedian made about Puerto Ricans at Trump's Madison Square Garden rally over the weekend will hurt the former president in his quest for the White House.

Ramon Martinez, who is a co-owner with his brother and wife of Mofongo, a Dominican/Puerto Rican restaurant in Reading, Pennsylvania, spoke with ABC News' Terry Moran after the rally where Tony Hinchcliffe made the joke. Martinez said the comments will play a role with the decisions from undecided Latino voters.

"I think that they will take one side when they hear what we heard last night," Martinez said.

Asked if Hinchcliffe's comments could hurt Trump, Martinez said "yes, I strongly believe that."

"Every time they speak, they put down the immigrants, the Latinos. I don't think that's the right way to get the Latino vote."

Moran spoke with the voters ahead of Trump’s Tuesday evening rally in Allentown, Pennsylvania -- a town with a significant Puerto Rican population.

-ABC News' Eric Fayeulle and Terry Moran