Nate Silver reveals the one battleground state that could spell trouble for Kamala Harris

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Polling and data guru Nate Silver warned Thursday that Vice President Kamala Harris is poised to be a "slight underdog" in Pennsylvania,which boasts 19 electoral votes andwill likely determine the outcome of the presidential election.

Silver, a prominent elections analyst and statistician, wrote on Substack that while Harris is leading by 3.8 points in his national poll tracker and is slated to win the popular vote, his nuanced election forecast model predicts former President Trump is electorally favored to win the White House by a 52.4% chance, versus Harris, who now shows a 47.3% chance of pulling off an electoral victory.

"Kamala Harris had one of her worst days in some time in our forecast on Thursday despite gaining in our national polling average," Silver wrote.

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But, he continued, "There’s another, longer-term concern for Harris, though: it’s been a while since we’ve seen a poll showing her ahead in Pennsylvania, which is the tipping-point state more than a third of time in our model."

The latest Emerson College swing state poll shows Trump and Harris tied at 48% each in Pennsylvania. The Keystone State continues to see campaign trail traffic as both Trump and Harris battle for the largest electoral prize among the seven battleground states. Both campaigns have invested heavily in