By Reality Check team and BBC Monitoring
Trump supporters share their thoughts on the election result in Pennsylvania, the battleground state the Democrats won, cementing victory for President-elect Joe Biden.
A party has started in Philadelphia as Biden leads the count in Pennsylvania.
With officials in Philadelphia still counting postal votes that arrived before election day, Joe Biden's lead over Trump in the decisive swing state appears to be growing.
According to the BBC's election system, Biden is now leading Trump by 6,817 votes.
Just over an hour ago, Biden was leading by 5,587 votes.
Biden's lead is expected to continue growing, since the votes being counted now are absentee ballots. Trump actively discouraged his supporters from voting by mail. Biden told his supporters to do so, in order to help prevent the spread of the coronavirus.
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Pennsylvania Republican Senator Pat Toomey is among several critics from the president's own party who are disputing details from his news conference at the White House yesterday.
"I saw the president's speech last night and it was very hard to watch," he told NBC earlier today.
"The president's allegations of large-scale fraud and theft of the election are just not substantiated. I'm not aware of any significant wrongdoing here."
"Look, there are irregularities in every election. They tend to typically be very small and involve just a handful of ballots."
Toomey, who is due to retire in 2022, also said he had no idea how long it would take for votes to be fully counted in Pennsylvania, a state leaning towards Biden at present.
"It's going to take the time that it takes," he said, adding that the remaining votes will likely be for Democrats. "But at this point we just don't know. That's why we go through the process - to find out."
We've just heard an update from election officials in Pennsylvania.
Biden has taken the lead over Trump by 5,587 votes, with 95% of the state's precincts reporting.
The state could hand him the 270 electoral college votes needed to win.
While a handful of US states count their final ballots, voters in Pennsylvania face rising tension and uncertainty.
Philadelphia election officials say they are taking a break from processing mail-in ballots for the night, and will post updated information next at 09:00 EDT (14:00 GMT).
So far 76,000 ballots have been counted, out of approximately 350,000 cast by mail.
This is significant, as Biden voters are much more likely to vote by mail than Trump supporters. Trump has called mail-in voting fraudulent, despite evidence that it is quite safe.
According to a Philadelphia election official, they're receiving about 16 Democratic mail-in ballots for every one Republican postal ballot.
"Those first 75,000 [votes] are going to skew 16 Democratic voters for every one Republican voter, at least that was the last time we looked," the official said at a news conference.
Philadelphia is in the all-important battleground state of Pennsylvania.
Specialist disinformation and social media reporter
It’s been a mostly quiet election day, but a small wave of unsubstantiated claims about voter fraud and dirty tricks is being aimed at the crucial swing state of Pennsylvania.
One video showed a poll watcher being denied entry to a Philadelphia polling station. It has almost two million views on Twitter, and was shared by multiple pro-Trump accounts.
The man in the video was asked by officials to wait outside - with a woman telling him that his “city-wide” poll-watching certificate was not valid in that particular polling station.
The video was authentic, but rather than dirty tricks being covered up, it turns out there was confusion over the rules. Poll watchers used to only be allowed in a certain station, but they can now visit multiple sites across Philadelphia. The man was later allowed into the station with an apology.
Similar videos have been shared using the popular hashtag #StopTheSteal. One seemed to show pro-Democratic signage inside a polling place - a rules violation - but local authorities made it clear that the sign was far enough from the voting station, and thus allowed.
The incidents are not hugely viral - about 20,000 tweets use the hashtag - but they come a day after President Trump himself posted unsubstantiated claims about voter fraud and how it could lead to “violence in the streets” in Pennsylvania. Twitter labelled his tweet as misleading - and stopped it from being retweeted.
The former vice-president signed a message on a living room wall of the home in Scranton, Pennsylvania.
By Tara McKelvey
BBC News, East Norriton, Pennsylvania
Trump narrowly won Texas, Ohio, Pennsylvania and Florida in 2016. Will that happen again this time round?
The US president and his political rival both visit the Flight 93 memorial, but at different times.