Pennsylvania's 20 electoral votes remain in the balance in the 2020 presidential election.

As of 10 a.m. ET on Wednesday, President Donald Trump leads Democratic nominee Joe Biden by more than 600,000 votes statewide. More than 1 million early and mail-in votes have yet to be tabulated in Democratic-leaning areas near Philadelphia and Pittsburgh, which could help Biden gain ground.

Pennsylvania was one of a handful of states that were still too close to call as of Wednesday morning. In addition to Pennsylvania, Trump held narrow leads in Georgia and North Carolina while Biden was ahead in Michigan, Wisconsin, and Nevada. Most news outlets showed Biden leading the electoral vote, 238-213. A candidate must receive 270 electoral votes to win.

Gov. Tom Wolf posted on Twitter that Pennsylvania had over 1 million ballots still to be counted Wednesday. Wolf, a Democrat who took office in 2019, “promised Pennsylvanians that we would count every vote and that’s what we’re going to do.”

In the early hours Wednesday, Democrat Sen. Bob Casey Jr. explained the outlook of the election in a video posted on Twitter. Casey discussed how Biden is trying to win specific counties by a wide margin and touched on Allegheny County.

Ahead of the election, seven election forecasters — including FiveThirtyEight and Sabato's Crystal Ball — predicted Biden would win Pennsylvania.

It may take days for a winner to be announced in Pennsylvania. There are seven counties — Beaver, Cumberland, Franklin, Greene, Juniata, Mercer, and Montour — that we're still counting mail-in ballots on Wednesday.

Legal battles are also expected to ensue. Republicans on Tuesday filed a number of lawsuits, with two cases scheduled to be heard Wednesday.

Other states also could see legal challenges as the final votes are being counted in battleground states that saw record numbers of early and mail-in voting due to coronavirus concerns.

In Georgia, which carries 16 electoral votes, a software problem delayed results in Gwinnett County, one of the state's most populous, as well as backlogs in the adjoining counties of Fulton and DeKalb in the Metro Atlanta area.

Trump held a 50.5% to 48.3% edge with large numbers of ballots still being tabulated and likely headed to a process known as adjudication, where a panel representing both parties seek to validate the results.

North Carolina is another traditionally red state that has seen a tight race. Trump is the current frontrunner to claim the state's 15 electoral votes. He leads Biden 50.1% to 48.7% with early and mail-in votes still coming in from larger counties around Charlotte and Raleigh.

Biden holds identically narrow margins in Michigan and Wisconsin — 49.6% to 48.9% — with votes still to be counted in the Detroit and Milwaukee areas. He also holds a slim edge in Nevada, 49.2% to 48.6%. Those three states account for 32 combined electoral votes, which would put Biden at the magic number of 270 if they stay in his column.