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

As Trump continues to downplay the realities of the coronavirus pandemic on his path to re-election, he will pitch himself to Nevada voters this afternoon but he will do it from Arizona -- after a rally in the Silver State last month violated coronavirus restrictions and left his campaign with hefty fines.

The shifting of his event, this time, across the banks of the Colorado River to Bullhead City, Arizona, comes as polls show Biden with a nationwide lead, advantage in swing states and with more trust in voters than Trump to handle the coronavirus pandemic.

Trump in a three-state tour Tuesday condemned Democratic leaders in Michigan and Wisconsin for imposing restrictions to combat the coronavirus crisis -- and is expected to do the same with Nevada’s governor Wednesday while on Arizona soil, where Republican Gov. Doug Ducey, a close ally to Trump, leads.

But Democrats aren't ceding the Western states to the GOP. Biden's running mate, California Sen. Kamala Harris, was in Nevada on Tuesday in an push to prevent the state from flipping to Trump and will campaign in Arizona Wednesday -- stopping in the cities of Tucson and Phoenix. 

Biden, meanwhile, is off the trail, spending the day in Wilmington, Delaware. He’s expected to receive a virtual briefing on the pandemic from public health experts, then give a speech on protecting health care and his plan to tackle the coronavirus crisis.

Democrats are playing on the offense in the homestretch -- focusing on states that Trump won in 2016. Biden took a trip to the red state of Georgia Tuesday and has plans to visit Florida, Iowa, Wisconsin and Michigan later this week. Trump's pitch to Nevada voters, where Clinton won by less than 2.5 percentage points, shows the campaign thinks the state's six electoral votes are within reach.