Michigan Secretary of State Jocelyn Benson is estimating record turnout in this year's election, as more than 3 million Michigan voters have requested their ballots and over half of those voters have already returned them -- surpassing expectations with still two weeks until Nov. 3.

Looking ahead to the next two weeks, Benson told reporters Tuesday morning she is cautioning voters against using the mail due to potential postal delays, instead encouraging them to rely on drop boxes and hand delivering ballots to clerks offices to ensure their ballots meet the Election Day deadline.

There is currently a legal dispute in Michigan over the deadline for accepting mail ballots, with the Michigan Court of Appeals late last week blocking a lower court's order that extended the deadline for absentee ballots to arrive by two weeks.

-ABC News' Kendall Karson

First lady Melania Trump is no longer traveling with the president to Pennsylvania Tuesday, with her office citing a "lingering cough."

"Mrs. Trump continues to feel better every day following her recovery from COVID-19, but with a lingering cough, and out of an abundance of caution, she will not be traveling today," the first lady's chief of staff and spokesperson Stephanie Grisham said in a statement.

Tuesday's campaign visit to Pennsylvania was supposed to have been the first lady's first public appearance after contracting COVID-19.

Tuesday's event would have been the first lady's first rally appearance in over a year. She last joined Trump on stage at his reelection kickoff in Orlando in June 2019.

-ABC News' Jordyn Phelps and Will Steakin

The United States Postal Inspection Service, the law-enforcement arm of the Postal Service, this month issued a bulletin to local, state and federal law-enforcement agencies around the country warning them to be mindful of threats to postal workers and the mail because of the controversy surrounding mail-in ballots for the Nov. 3 election.

“The intense media focus and public awareness surrounding these mail-in ballots could potentially make USPS employees and vehicle a tempting target for criminal activities,” the one-page Oct. 7 bulletin said. It goes on to list a series of possible threats including assaults of USPS personnel and general mail theft, among other concerns.

The bulletin comes as the president continues to sow doubt in the integrity of the mail-in ballot process.

-ABC News' Josh Margolin

When Sen. Kamala Harris, D-Calif., took part in an interview on a South Florida radio show called "Caribbean Riddims," she sprinkled the Jamaican phrase "ya mon" throughout the interview with a heavy hand.

The Democratic vice presidential nominee is the daughter of Jamaican and Indian immigrants and playing up her Jamaican heritage is a huge part of the Biden-Harris campaign's outreach to Afro-Caribbean voters in the Sunshine State.

The voting bloc is significant in Florida, especially in South Florida and along the critical I-4 corridor, a bellwether in this battleground state. According to the Migration Policy Institute, 41% of the nation's 4.4 million Caribbean immigrants live in Florida, and Miami-Dade County has the highest number of Caribbean immigrants in the U.S. with 862,000 Caribbean immigrants calling it home. If the campaign's outreach to this community is successful, it could help turn the state into an electoral victory for Biden and Harris.

-ABC News’ Averi Harper

A photo is circulating on Twitter depicting a City of Miami police officer wearing a pro-Trump mask inside a polling site. The chair of the Miami-Dade Democratic Party, Steve Simeonidis, took the photo and posted it but ABC News could not confirm the officer's name.

Miami Police issued a statement referencing "the photograph being circulated," noting that "this behavior is unacceptable, a violation of departmental policy, and is being addressed immediately." A public information officer with the department, Mike Vega, told ABC News by phone that the chief of police will take "immediate action."

Vega said that donning political clothing or accessories is "a violation of our departmental orders," and Simeonidis told the Miami Herald he considered the officer's behavior "voter intimidation."

A spokeswoman for the Miami-Dade County elections office told ABC News that a complaint about the incident was brought to her attention this morning. She then passed it on to Miami Police.

-ABC News' Will McDuffie