With 28 days to Election Day 2020, here's the news that you'll want to know:

(1) President Trump returns to the White House (watch the video here) and said he would debate Biden next week

(2) report: "collapse" in college student voter registration could mean big trouble for Biden and Democrats on Election Day

(3) 2020 election on track for record-breaking voter turnout, 4M have voted already

WATCH: President Trump returns to the White House. He says he'll debate next week.

"'I am looking forward to the debate on the evening of Thursday, October 15th in Miami. It will be great!' Trump tweeted Tuesday morning, just hours after he was discharged from Walter Reed hospital, where he was undergoing treatment for COVID-19. The president 'met or exceeded all standard hospital discharge criteria,' according to White House doctor, Sean Conley." (Daily Wire)

-- President Trump returned to the White House last night after his discharge from Walter Reed hospital, where he had been over the weekend after his COVID-19 diagnosis. You can watch a video of his return to the White House here.

-- President Trump said he was eager to debate Joe Biden next week. Yesterday, Biden had said he would debate President Trump if "scientists say that it's safe." We would assume this issue is far from settled; we'll keep you posted.

-- President Trump also said he would return to the campaign trail soon. Over the weekend, the Trump campaign announced a new special initiative: Operation MAGA. The project will bring together top-level Trump supporters for campaign events while President Trump is recovering from COVID-19.

"Collapse" in college student voter registrations could mean big trouble for Biden and Democrats in 2020.

"College campuses that once reliably boosted Democratic candidates in key swing states have seen voter registration rates plunge amid coronavirus shutdowns, public data show. Universities across the country have embraced online-only classes or 'hybrid' learning models in response to the pandemic. Those restrictions, a Washington Free Beacon review of voter registration data found, have likely dealt a blow to Democrats in some of the most competitive election races in the country." (Washington Free Beacon)

• What's happening: Democrats may be in trouble in battleground states where colleges have been closed or have severely diminished on-person classes. That's because Democrats usually rely on college students, who lean to the left, to boost their margins in swing states ... and they're not on-campus in many places.

This year, as the Washington Free Beacon reported: "New voter registrations in the vicinity of seven major public universities in Wisconsin, Michigan, Ohio, and North Carolina have plummeted compared with 2016."

Read this thorough analysis from the Washington Free Beacon for the full details and data.

• What's at stake: The margins of victories in battleground states are very narrow -- and any drop in voter registrations for one party or the other should concern them.

The Washington Free Beacon specifically analyzed what's happening with the biggest schools in key states ... and it's not encouraging results for Biden and Democrats.

As the Washington Free Beacon explained: "The decline in registrations could hurt Biden and Democrats more generally because theirs is the party with which young people and the college-educated are overwhelmingly more likely to affiliate. In the 2018 midterms, for example, 18- to 29-year-olds broke for Democrats by a 49-percentage-point margin, while college grads generally favored them by a 17-point advantage."

And one progressive candidate in Ohio blamed her primary loss on a lack of student voters at Ohio State University.

2020 election on track for record-breaking voter turnout. 4M Americans have voted already.

"'We’ve never seen this many people voting so far ahead of an election,' McDonald said. 'People cast their ballots when they make up their minds, and we know that many people made up their minds long ago and already have a judgment about Trump.'" (Reuters)

• What's happening: Due to changes in voting due to COVID-19, 4 million Americans have voted already -- and one expert says we're on track for record-breaking voter turnout in the 2020 election.

Michael McDonald of the University of Florida estimates that 150 million Americans will vote -- which would be the most in 1908.

• What's at stake: First, and most important, we are glad to see so many Americans voting! In this uncertain year with so many debates about how best to vote given COVID-19, the most important thing is that Americans can and do vote.

Second, Democrats have criticized President Trump and Republicans for highlighting concerns about ballot integrity and said it would deter voters. But this story shows Democrats' claims about Americans being deterred from voting are clearly political arguments -- not based in reality.

Third, in an unprecedented year, it's still unclear how the outcome of the 2020 election will be affected by a potentially massive increase in voter turnout. There's never been anything like these circumstances in modern American political history.