Pennsylvania a critical battleground this election
Tonight's debate is being held at the National Constitution Center in Philadelphia.
Pennsylvania has emerged as a central battleground once again after sealing President Biden's victory over Trump in 2020.
![PHOTO: People are seen outside the National Constitution Center, the site of tonight's presidential debate between Republican presidential nominee former President Donald Trump and Vice President Kamala Harris, Sept. 10, 2024, in Philadelphia.](https://i.abcnewsfe.com/a/6afd9888-aae7-47ad-8213-5df50d7cdff2/abc-debate-3-ap-gmh-240910_1726006055734_hpEmbed_3x2.jpg)
Right now, Harris and Trump are separated by less than 1 percentage point in 538's polling average of the Keystone State.
Of the seven or so states believed to be in play this cycle, Pennsylvania holds the most electoral votes at 19.