Election officials across the country are ramping up their security measures at polling places with voting underway in the presidential race, from beefing up law enforcement presence to donning bulletproof vests to deploying drones for surveillance amid an increasingly hostile environment.

The once-routine business of running elections in America has become much more fraught with risk in the wake of the 2020 campaign, with poll workers facing harassment, violent threats and chaotic protests. It’s a dynamic that has forced many election officials out of the industry, while those who remain have taken in some cases dramatic steps to protect poll workers and voters ahead of Election Day. Some poll workers are also receiving pay bumps as incentives to stay on through a stressful voting period.

Listen to Wisconsin, a group of Wisconsinites advocating for an end to the Israel-Hamas war, plans to host a series of protests at three early voting sites in Milwaukee tomorrow afternoon.

The protests are part of a larger movement called Swing States Against Genocide, backed by voters in Pennsylvania, Georgia and Wisconsin. The group says it is calling for a permanent cease-fire from the current administration and a commitment to an arms embargo on Israel.

Events will begin at University of Wisconsin-Milwaukee’s campus in the early afternoon, where members of Students for Justice in Palestine and others will protest amid visual displays of calendar months showing a year since the war began.

A group called the Committee for Safe and Secure Elections rolled out a series of public service announcements designed to push back on threats against election workers.

The group, which describes itself as "cross-partisan experts in election administration and law enforcement who aim to support policies and practices that protect election workers and voters from violence, threats and intimidation," released the series of ads on YouTube earlier today.

They feature a collection of former military officers, current election officials and law enforcement officers urging citizens to stand up against threats to election workers and families, and warning of consequences for those who threaten violence.

“Every vote counts and will be counted. What will not be tolerated are acts of violence and intimidation,” Orange County, California, Sheriff Don Barnes, a Republican, said in one of the ads. For those who "decide to act out in ways that aren't legally protected by the Constitution, you should expect there may be some law enforcement actions taken against you."

Trump lashed out against Harris at his roundtable event with Latino leaders in Miami this morning, saying, "This woman is the worst."

The former president said Harris lied about his position on IVF and that he was "totally in favor" of it "from the beginning." "She said I'm against it," he added.

"Then she’s got that, the worst governor in the country," Trump said. "I think she made a horrible mistake. We’ll see what happens. On Nov. 5, you know, let’s see what happens. But there’s something wrong with him. Honestly, there’s something wrong — and then something wrong with her, too. She’s slow, low IQ, something, I don’t know what the hell it is, but they lied.”

Bruce Springsteen will headline two Harris-Walz campaign rallies this week and next as part of a concert series to mobilize voters in battleground states, a senior campaign official said.

Springsteen — who endorsed Harris for president this month — will perform at Harris’ first joint rally with former President Barack Obama in Atlanta on Thursday before heading to Philadelphia with Obama on Monday.

The campaign will announce additional concerts in the coming days, and the series plans to hit all seven battleground states.

At a roundtable event with Latino supporters in Miami this morning, Trump scoffed at Harris for not appearing on the campaign trail today.

“I don’t know, but it’s gonna be close," Trump said. "I mean, she’s sleeping right now. She couldn’t go on the trail. You know, you think when you have 14 days left, you wouldn’t be sleeping. She’s not doing anything today."

The former president then suggested he should take a day off. "We’ve gone 52 days in a row, and I’m going 14 more days, and we’re gonna have a big victory party, hopefully, and we’re gonna turn our country around," he said.

NBC News reached out to the Harris campaign for comment.

In a recent direct-to-camera ad, Rep. Don Bacon, R-Neb., tells voters: "I'll put more money in your pocket by eliminating taxes on Social Security, tips and overtime. And I'll work every day to restore the American dream."

Bacon's position aligns with a trio of Donald Trump's campaign planks as the congressman faces a challenge from Democrat Tony Vargas in the competitive Omaha-based district.

But those proposals are expensive, and Trump hasn't proposed a way to pay for them. When asked on NewsNation about the high cost of nixing taxes on tips, Social Security benefits and overtime, among other tax breaks Trump has mused about, Bacon added a caveat.

Senate Majority Leader Chuck Schumer, D-N.Y., and other Senate Democrats released a report this morning encouraging Americans to vote early and have confidence in the electoral process, while stressing that the outcome of the election may not be known on Nov. 5. 

The 11-page report reads as a “what to expect” for Election Day and lays out information on each state’s vote counting processes for mail-in ballots. 

“As in past years, some state vote totals on Election Night might not give us a complete picture of who will win after all the votes are counted,” the senators wrote in the report. “There have been efforts to stoke fear and chaos about the election with false allegations of voter fraud. The American people should beware of election misinformation.”

Doors opened this morning at what Milwaukee election officials say is the city’s busiest early voting location, where more than 100 people were already lined up.