The Pennsylvania election is in the spotlight as voters decide whether Barack Obama or Mitt Romney will win the state's 20 electoral votes.
According to the latest polls, Obama had a slim lead over Romney ahead of Decision Day. Four years ago, the president came out on top in the race in the Keystone State in 2008 when he ran against Sen. John McCain (R-Ariz.).
Despite Pennsylvania leaning blue going into the election, the Romney campaign made a last minute push in the battleground with a significant ad buy and the candidate making a last minute stop to the state over the weekend.
Further down on the ticket, Democratic incumbent Sen. Bob Casey is expected to secure another term in the Senate in his campaign against Republican challenger Tom Smith.
In Pennsylvania, polls open at 7:00 a.m. and close at 7 p.m. Eastern time.
Check out the latest polls from swing states below. Scroll down for live updates.