We're on a tight watch.Tensions rise everywhere, including at polling stations.

[Anchor]
Let's go to New York this time.

Concerns are growing that violence will occur at polling places and other places as the presidential election is held in an ultra-thin manner amid keen interest.

I'm connecting with correspondent Lee Seung-yoon.

Thorough protection measures are being taken in important facilities, including polling stations?

[Reporter]
Police forces are deployed everywhere right now, and the guard is tight.

As the U.S. presidential election has been overheated due to an ultra-tight structure, protection measures to prevent the recurrence of violence such as the Capitol storm immediately after the 2020 presidential election have been upgraded to an unusual level.

The U.S. government launched an unprecedented security scenario to counter violence or chaos on Election Day and beyond to reassure voters.

In particular, the rival states plan to monitor polling stations 24 hours a day during this election period by deploying a large number of people, more than four times higher than during the last presidential election.

Vacations for emergency personnel during the election have been suspended, and there are counting stations that are protected like fortresses by mobilizing surveillance drones.

Hundreds of election offices across the United States are also protected by bulletproof glass, steel doors and various surveillance equipment.

In some areas, on-site managers at polling stations were given panic buttons, or emergency bells, that could be worn on ID strings.

Some places have prepared protective clothing and antidote, as well as bulletproof vests in preparation for chemical attacks through mail.

The contested state has installed security fences around the state capitol, complementing key facility gates and surveillance equipment.

The reason why U.S. election authorities remain so tense is because of the nightmare of violence since the 2020 presidential election.

Donald's diehard supporters, who lost the presidential election four years ago, stormed the Capitol on Jan. 6, 2021, in defiance of the election results, sending shockwaves through American society.

Former President Trump is hinting at the possibility of dissatisfaction if he loses, citing election fraud during the presidential election process.

[Anchor]
U.S. presidential candidates are considering how to use U.S. President Joe Biden, who has emerged as a last-minute variable, in the election?

[Reporter]
U.S. President Joe Biden's remarks at the end of the election that "the trash is only Trump supporters" have become a big variable for both Vice President Kamala Harris and former President Donald Trump's presidential campaign.

When Trump's "Puerto Rico is a trash island," he poured cold water on the atmosphere that was gaining momentum, Harris started to distance herself.

On the other hand, in case he missed this moment, Trump drove a garbage collection car and was enthusiastic about Biden's criticism while wearing a street cleaner vest.

Let's hear from the two candidates.

[CAMALA HARRIS / VICE PRESIDENT OF THE UNITED STATES: President Biden has explained, but I strongly disagree with criticizing people over who they voted for.]

[Donald Trump / Former President of the United States] The Biden administration has done terrible things by keeping our borders open and treating America like garbage. Inflation shouldn't have happened.]

However, Harris is burdened by Biden's slip of the tongue and low approval rating, but President Biden can't just distance himself because he can make up for his weaknesses.

It emphasizes Biden's policy succession, especially as President Biden won the support of suburbs and black voters.

YTN had a conversation with CNN's political reporter to analyze it, and let's hear it for ourselves.

[Julia Benbrook / CNN Political Reporter] It's also important to keep some distance from Biden and appeal to his supporters. The Biden campaign received strong support from suburban voters and Black voters in 2020.]

Trump, on the other hand, was initially eager to reverse all of the Biden administration's policies.

In particular, he has vowed to repeal the Biden administration's IRA, or Inflation Reduction Act, which subsidizes electric vehicles.

However, when 18 House Republicans and the speaker opposed the IRA's abolition, they took a step back, saying, "Electric cars are great," fearing headwinds.

Though not popular, both Harris and Trump are considering how to use Mr. Biden, who has emerged as a last-minute variable, for the election.

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Video editing: Lim Hyun-chul