With 19 electoral votes, Pennsylvania could be the key to winning the White House. Voters will also decide one U.S. Senate seat, attorney general, auditor general and treasurer.

As all eyes look to Pennsylvania, voters across the Commonwealth took to the polls to cast their ballots. With more than one million ballots already sent in by mail, millions more are expected to be cast.

While the presidential race topped Pennsylvania ballots, voters across the commonwealth also cast votes for statewide offices and a key U.S. Senate race. Incumbent U.S. Sen. Bob Casey is facing off against Republican challenger Dave McCormick in a race that will help determine the balance of power in the Senate.

See live updates of Pennsylvania election results from the 2024 election, including Senate and House races, state elections and ballot initiatives.

Joe Biden was born and raised in Pennsylvania, one of the oldest states in the Union. Generally considered a battleground state, Pennsylvania voted Democrat in six elections before turning red in 2016.

Any voters in line at a polling site at 7 p.m. will be allowed to vote, the Polk Supervisor of Elections Office said. Live election results: After polls close at 7 p.m., check back for live Polk County results For voters who requested mail ballots and have not yet mailed them,

From the polling place to the courtroom, ABC News tracks the latest election security developments as experts warn about the spread of misinformation and disinformation from within the U.S. and abroad.