In the immediate aftermath of her Democratic Party coronation and the mainstream media's predictably supportive coverage blitz, Vice President Kamala Harris' path to the White House appeared certain to many.

However, now that Labor Day is in the rearview mirror, and more Americans are getting serious about the November election, well-known prognosticator Nate Silver has revealed that Harris is facing some significant headwinds, particularly in critical battleground states, as the New York Post reports.

Silver sounds the alarm

Of particular concern to Harris may be recent statements from noted data analyst Nate Silver, who says that former President Donald Trump's electoral fortunes are currently on the rise.

According to the founder of FiveThirtyEight, Trump now has a 58.2% likelihood of prevailing in November, representing a substantial lead over Harris, whose chances he says currently stand at just 41.6%

In the most recent update to his election forecast bulletin, Silver observed, “Trump's chances of winning are his highest since July 30. And the chance of an Electoral College-popular vote split working against Harris has risen to almost 18%.”

According to Silver's model, Harris maintains a 58.9% chance of taking the popular vote, but he adds that Trump currently appears poised to win 274 Electoral College votes, the determining factor in who claims the Oval Office.

In Silver's estimation, some of the key drags on Harris' initial surge of support include her choice of Minnesota Gov. Tim Walz as her running mate instead of Pennsylvania Gov. Josh Shapiro and her decision to hold onto much of President Joe Biden's former campaign staff.

Additional areas of Democratic Party concern

While Silver does still consider the race to be a veritable toss-up, there are other veteran analysts who have also offered words of warning that may rattle the Harris camp.

As Fox News reports, Mark Halperin suggested this week that Harris is in danger of losing the critical swing state of Pennsylvania, without which she stands little chance of winning the election.

Discussing the situation on his 2WAY media platform, Halperin mused, “I've been asking people two questions in the state, national strategists to the campaign -- one is, who is currently ahead in the race, and where does Pennsylvania rank in terms of 1-7 states that Harris is most likely to win.”

According to Halperin, not a single one of his contacts put Pennsylvania at the top of the list of swing states Harris is likely to win, with others painting an even more dire picture for the Democrat.

“As you can see here, this source of mine, whom I trust very much, a very smart person, put Pennsylvania sixth, the sixth most likely state for Harris to win. If that's true, and Harris loses Pennsylvania, almost certain not going to win [the election],” Halperin said, adding, that if one accepts that analysis as true, “you can't make her the favorite, and you almost can't even say this race is a toss-up.”

Michigan in the mix

Potentially adding to Harris' mathematical woes is a new survey out of another battleground in which Biden emerged victorious over Trump in the 2020 contest, with The Hill reporting the results of a WDIV/Detroit News poll showing Trump with a slight lead over Harris in the Great Lakes State.

Despite Harris' recent headline-making visit to the Motor City in which she attempted to make her case to union members by adopting a somewhat unusual accent, it seems as though in this vital swing state – as in others – the initial honeymoon phase enjoyed in the aftermath of Biden's withdrawal may have come crashing down to reality.