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.

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

The Center for Responsive Politics now estimates nearly $14 billion will be spent on federal elections across the country by the end of the 2020 election cycle, nearly twice the total amount spent during the 2016 election cycle.

The center earlier this month projected $11 billion in total spending for the 2020 cycle but updated the number after seeing a huge influx of political spending reported in the third quarter of this year.

 
This means that even if committees had stopped all spending at the end of September, the 2020 election would still be the most expensive ever.

“Donors poured record amounts of money into the 2018 midterms, and 2020 appears to be a continuation of that trend -- but magnified," CRP Executive Director Sheila Krumholz wrote in a statement. "Ten years ago, a billion-dollar presidential candidate would have been difficult to imagine. This cycle, we’re likely to see two.”

-ABC News’ Soorin Kim