Watch Replay: Hillary Clinton Rally at Heinz Field in Pittsburgh, Pennsylvania

Hillary Clinton made a final push to voters in Pittsburgh, Pennsylvania, on Friday at an event at Heinz Field, the home.

In one of Clinton's rare rallies in a massive stadium setting, she made her case to voters in the critical swing state on the Pittsburgh Steelers' home field.

Photos from the ground Friday morning showed a strong turnout in Pittsburgh for the event, which wasn't on the football field itself but in a room in the stadium.

You can watch a replay of the event below:

Recent polls in the Keystone State show a tight race with Clinton holding a small lead over Donald Trump. The RealClearPolitics average of major state polls Friday morning showed Clinton with a three-point lead over her GOP rival.

Pennsylvania and its 20 electoral votes have long been coveted by Republicans, despite the state voting Democratic for president the last six years. Trump has been very vocal about his plans to flip the state Republican.

A Clinton win in Pennsylvania would narrow Trump's path to 270 electoral votes significantly and would be a major boost for the former secretary of state's campaign.

To bolster her chances, she will appear at a concert with Katy Perry on Saturday in Philadelphia. The event is scheduled for 5:30 p.m. on Nov. 5. According to the Clinton campaign, the pair will "urge Pennsylvanians to support Clinton by turning out on Election Day" to vote.

With just four days until Election Day, 30 million ballots have already been cast by voters — a strong sign of voter enthusiasm. But where Clinton may unexpectedly benefit is from a surge in early voting by Latinos in battleground states such as Arizona, Florida and Nevada during what is becoming a tightening race against Trump.

Image courtesy Evelyn Pivarnik