According to the latest election counts released Wednesday evening, Biden narrowly leads Trump, 51%-48%, with less than 80,000 votes between them. Following a neck-and-neck race on Tuesday, Trump was condemned for falsely claiming election victory early on Wednesday as the vote count was still under way. Though Trump campaign suits to stop the process in MI and Pennsylvania were pending, local courts - much less the Supreme Court - had not intervened.
In 2016, Mr Trump won the presidency with 62.9 million votes, despite being behind on the popular vote to rival Ms Clinton who won 65.8 million votes.
Election officials continue to count votes across the United States in a process that usually follows election day.
States still up for grabs include Nevada (6 electoral votes), Pennsylvania (20 electoral votes) and Georgia (16 electoral votes).
Several reporters have pointed out the inconsistency in the GOP message on vote-counting.
The two states, along with Arizona - another that Biden was projected to flip - put the Democrat within arm's reach of making Trump the first one-term president in 28 years. There are still a lot of votes to be counted and there is reason to believe it will help Joe Biden narrow that gap, CNN's John King said.
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It is unclear what, if any, legal basis the president would have, with Mr Biden's camp insisting that the law required every "duly cast vote" to be counted. His lead is growing as counting picks pace in key battleground states.
However, legal experts said that while there could be objections to particular ballots or voting and counting procedures, it was unclear if such disputes would determine the final outcome.
Social media and CCN footage showed Trump supporters swarming the Maricopa County Elections Department building in Phoenix, Arizona. "How come every time they count Mail-In ballot dumps they are so devastating in their percentage and power of destruction?" he tweeted on November 4.
At this point, Biden holds 253 electoral votes by the Times' forecasting, to Trump's 214. In 2000, Republican-controlled Florida was the critical state and Bush clung to a small lead.
"Michigan's elections have been conducted transparently, with access provided for both political parties and the public, and using a robust system of checks and balances to ensure that all ballots are counted fairly and accurately", said Democratic Attorney General Dana Nessel. Mr Trump reprised his "Make America Great Again" mantra during the bitter campaign. The clerk's office reported having about 240,000 votes tallied as of midday Wednesday.
The race in Pennsylvania remained undecided on Wednesday as a significant number of ballots remain to counted in the state which received 3.1 million mail-in ballots. The episodes highlight the challenges of conducting an election in the midst of a global pandemic.