The FiveThirtyEight Politics Podcast crew takes a closer look at who exactly is voting in this election and how voters' preferences have changed or stayed the same since 2016.

51:45

FiveThirtyEight Politics Podcast: How the electorate will be different in 2020

Supreme Court Justice Brent Kavanaugh made a rare, if minor, correction to a Supreme Court opinion in response to a highly public objection.

Earlier Wednesday, the state of Vermont formally requested that Kavanaugh correct his concurring opinion from Monday's controversial Supreme Court decision blocking a mail ballot deadline extension in Wisconsin.

While arguing that the court should not "second-guess" state legislative judgements during the pandemic, he attempted to draw a comparison between Wisconsin and other states which he claimed had decided against changes to mail ballot rules.

"States such as Vermont," Kavanaugh wrote, "have decided not to make changes to their ordinary election rules, including to the election-day deadline for receipt of absentee ballots. The variation in state responses reflects our constitutional system of federalism. Different state legislatures may make different choices."

While it's true that Vermont has not extended its Election Day postmark requirement for mail ballots, the state has in fact made substantive changes to the rules aimed at allowing greater participation during a public health crisis, including mailing every voter a ballot and prepaid return envelope.

Kavanaugh made a revision to page 5 of his opinion, the court clerk said later Wednesday. It has not changed the substantive bottom line of his vote.

With the revision, it now reads, "Other States such as Vermont, by contrast, have decided not to make changes to their ordinary election-deadline rules, including to the election-day deadline for receipt of absentee ballots. See, e.g., Vt. Stat. Ann., Tit. 17, §2543 (2020). The variation in state responses reflects our constitutional system of federalism."

-ABC News Senior Washington Reporter Devin Dwyer and Benjamin Siegel

After a surprisingly sluggish weekend for polling, the floodgates have opened, with a mix of high-quality polls, low-quality polls and pretty much everything in between. And although there are some outliers in both directions, they tell a fairly consistent story, overall: A steady race nationally, perhaps with some gains for Joe Biden in the Midwest.

As Biden was leaving The Queen Theater in Wilmington, Delaware, on Wednesday night, he as asked why he sometimes wears two masks.

"Because, the one mask is the N-95 and I don't like it around my ears and I hold it on with this mask," Biden said referencing how he sometimes sports a blue paper mask over his N-95 mask.

-ABC News' Molly Nagle

Trump held a rally with hundreds of supporters in Bullhead City, Arizona, this afternoon as coronavirus cases in the state surge and the situation begins to resemble the early stages of the summer spike that made Arizona one of the worst hot spots in the world.

“You are so lucky, people, that I took you on this journey with me,” Trump told the enthusiastic crowd, aiming to pitch himself both to Arizona voters and Nevadans just across the Colorado River.

At one point, Trump defended what he called his "reputation" for stiffing people, saying people who do a “lousy job” don’t deserve to be paid -- using whoever set up his microphone at the rally as an example.

“Whoever did this microphone, don't pay them. You know, I have a reputation for not paying. And it's a false reputation. When somebody does a lousy job like a microphone that is no good or like teleprompters that fly with the wind, I say don't pay them,” Trump said.

Sen. Kamala Harris is also campaigning in the Cooper State this afternoon, opting for drive-in style rallies and roundtable events, as opposed to the shoulder-to-shoulder events the Trump campaign has hosted. In a parking lot at Pima Community College earlier in the day, Harris pushed back on Trump calling her a “female socialist.”

“You know there has been some talk about my values. Let me just tell you, Tucson, I am a proud patriotic American. I love my country and our values reflect the values of America,” Harris said.

-ABC News’ Averi Harper