WASHINGTON -- The 2020 presidential election is still too close to call Friday, and political nerds are crunching the numbers, trying to figure out who will reach 270 electoral college votes first and win the presidency.
As of 9:00 a.m. ET, both President Donald Trump and former Vice President Joe Biden have paths to victory, depending on how the remaining battleground states are called.
The pivotal states that are still too close to call are Arizona, Georgia, Nevada, North Carolina and Pennsylvania.
ABC News called Michigan as a victory for Biden on Wednesday. With 100% of precincts reporting, ABC News can report that former Vice President Joe Biden has a lead of about a half a percentage point over President Donald Trump in Wisconsin. Because the vote is very close and has not yet been certified, ABC News is not projecting a winner, but is characterizing Biden as the apparent winner.
Ways Biden can win
With Biden as Michigan's projected winner and the apparent winner in Wisconsin, he's at 253 electoral votes. He needs to reach 270 to win, and he has a few ways to get there.
If Biden wins Pennsylvania, which has 20 electoral votes, then he's over the top then and there. As of Friday, Biden inched ahead of Trump by nearly 5,600 votes.
He could also make up the missing 17 electoral votes with a combination of any two other outstanding states. He's leading in Arizona (11 electoral votes) and Nevada (6 votes), and just inched ahead of Trump in Georgia (16 votes) Friday morning. North Carolina, where Trump maintains his lead, has15 electoral votes.
Ways Trump can win
Trump's paths to victory grew more challenging Wednesday afternoon with Biden's projected win in Michigan and his apparent win in Wisconsin. Even if he wins in the outstanding southern states, Georgia and North Carolina, that still puts him about 23 electoral votes shy of victory.
As of 8:00 a.m. ET, Trump has a lead in North Carolina and Pennsylvania. Still, winning all of those puts him just shy of 270, so he'd need to win one more key undecided state to secure reelection, like Arizona or Nevada. That means Trump would need to win nearly all of the still undecided states to clinch the presidency.
When will we know who wins?
It's too soon to say when one candidate will have a decisive victory over the other, but this outcome was expected by political analysts. With a record number of mail-in votes cast, this election was expected to take longer to count than years past.
The most outstanding votes that still need to be counted, as of Friday, are in Pennsylvania.
Stay with ABC News for the latest updates.
A look at election results in key battleground states: