Election 2020 updates: Biden warns of 'dark winter,' pushes masks in pandemic plan

A federal judge has ordered the U.S. Postal Service to send inspectors to several processing facilities in key battleground states -- including Pennsylvania, Michigan and Florida -- to ensure that no mail-in ballot is left behind.

U.S. Judge Emmet Sullivan ruled Tuesday that the Postal Service must “sweep the facilities between 12:30 PM EST and 3:00 PM EST to ensure that no ballots have been held up and that any identified ballots are immediately sent out for delivery.”

Those inspectors are ordered to report back to the court by 4:30 p.m. ET “confirming, in the most efficient manner available, that sweeps were conducted and that no ballots were left behind,” Sullivan wrote.

The matter at hand is part of a lawsuit brought in August by the NAACP accusing the Postal Service and its leader, Postmaster General Louis DeJoy, of disenfranchising voters of color by implementing a set of cost-cutting initiatives that slowed mail service.

- ABC News’ Lucien Bruggeman.

The FBI is probing reports of robocalls being made on Election Day urging people to stay home and not vote, according to a senior Cybersecurity and Infrastructure Security Agency official. 

The official added this is a “voter intimidation, voter suppression tactic." The official also pointed out that robocalls of this nature are made in every election.

“Be mindful of people that are trying to intimidate you, undermine your confidence, but keep calm and vote on,” the senior CISA official added.

Earlier today, ABC News confirmed robocalls have been going out to voters in the battleground state of Michigan -- specifically targeting the city of Flint, Michigan, where the majority of residents are Black.

These robocalls are "purposefully spreading misinformation" according to the statements from Michigan Secretary of State Jocelyn Benson and Michigan Attorney General Dana Nessel. The robocalls are telling voters to vote tomorrow -- instead of today -- due to long lines, according to the tweet from Nessel.

Nessel urged people not to “believe the lies.”

-ABC News' Luke Barr.

Across the country, images of poll workers decked out in full personal protective equipment during this unusual election are garnering applause on social media. 

In Georgia, Secretary of State Brad Raffensperger told reporters earlier this week that 52,000 Georgians volunteered to be poll workers this election, even in the middle of a pandemic, and later on urged voters to "show grace" to those helping to usher in record turnout. 

Meanwhile in Ohio, Secretary of State Frank LaRose said on the “Powerhouse Politics” podcast Monday that the state recruited a "whole new generation" of poll workers ahead of the 2020 vote.

“That's been a huge success. 56,000 Ohioans have volunteered and been trained to be poll workers. That's far and away above previous numbers,” he said. “37,000 is really the bare minimum that we need, but we wanted to go 50% above that. So we've got 56,000 poll workers trained and ready to go.” 

In Michigan, the Pistons are lending their facility to receive ballots, while all employees are given a paid day off this Election Day in order to vote and serve as poll workers. Michigan has also worked to recruit multilingual poll workers to assist voters as part of a new effort to make voting more accessible.

-ABC News' Kendall Karson

White House economic adviser Larry Kudlow confirmed Tuesday that the roughly 400 guests at President Donald Trump's election night party in the East Room of the White House will all be tested for coronavirus. 

"Every guest will be tested, and I will be wearing a mask," Kudlow said. 

Notably, Kudlow did not commit to staying in the administration if Trump is reelected.

"I'm an old-fashioned guy, I take it one day at a time," he said when asked if he's stick around after the election. 

-ABC News’ Elizabeth Thomas.