Trump’s tweet goes to the heart of the political and legal case he’s been making all year. But there are problems with his argument: namely that it goes against every election in American history, it has no legal basis, and it’s a part of his politicized disinformation campaign about election security that’s regularly contradicted by the federal government’s own top election security officials.

There is nothing nefarious to “imagine.” Counting ballots after Election Day happens in literally every national election. Every vote has never been counted on election night. The “results” you typically hear on that night are actually news media predictions with zero legal weight. Officially certified results don’t come in for days or weeks as all ballots are counted. 

It’s the counting of ballots that’s at issue in the Supreme Court. Dealing with a worsening pandemic, record-breaking mail-in voting, and the US Postal Service faltering under a recent Trump donor, some states have attempted to deal with the problems by extending the time for valid ballots to be counted.

Democrats and court liberals have supported expanded voting rules in hopes of adapting to this unprecedented election challenge. Republicans and court conservatives, meanwhile, have generally opposed rule changes enacted by state legislatures even when they’re pushed by state election officials.

The rulings so far

Here’s how the Supreme Court has ruled in recent cases that will define the 2020 election.

Pennsylvania, October 20: The Republicans lost a swing state battle over Pennsylvania last week. The state’s Supreme Court had ruled that mail ballots could be received three days after election day, based on the Postal Service saying that delivery delays risked disenfranchisement around the state. Who made the ruling is a key theme here: If the extensions come from the states, they tend to succeed in the Supreme Court; if they come from the federal government, they fail. 

Alabama, October 22: A statewide ban on curbside voting—that is, disabled folks driving up to a polling place and dropping off ballots—was allowed to stand by the US Supreme Court. The ban originally came from the Alabama Secretary of State, who was in dispute with a federal court that the ban violated the Americans with Disabilities Act. The state prevailed here over dissent from the Supreme Court’s liberals.

Wisconsin, October 26: As we recently reported, the Supreme Court declined to extend the deadline for counting of mail-in votes in Wisconsin, a victory for Republicans who brought the legal challenge. This particular extension order originally came from a federal judge in September, a crucial point that the conservatives in the court all agreed on: Federal courts shouldn’t micromanage state-run elections.

Pennsylvania, October 28: The US Supreme Court declined a Republican request to expedite a review of Pennsylvania’s mail-in ballot deadlines—the case it had ruled on the previous week. But the issue is not gone for good: Conservative justices left the door open to the possibility of revisiting the case after the election, and Pennsylvania officials are segregating ballots received post-Election Day in the case of just such a legal battle. If the vote is close in Pennsylvania, you can bet this will rear its head once again.

North Carolina, October 29: Democrats won a similar case a few days later in a 5-3 decision, with Chief Justice Roberts joining the more liberal justices in allowing North Carolina to receive and count votes up to nine days after Election Day. This extension, from three days to nine days, came from the state’s Board of Elections. That, to Roberts, ultimately made the difference.

The near future

“I think this will end up in the Supreme Court,” Trump predicted last month.

Amy Coney Barrett hasn’t participated in any of the five major voting rulings but she’s sure to be involved in the future, and will certainly play a role in any legal dispute after Election Day. President Trump has made it clear that’s where sees the fight going after the polls are closed.