On August 1st, statistics showed 4,074,858 Democrats and 3,159,815 Republicans. An additional 1,106,024 voters brought the grand total to 8,340,697.
As of September 5th, there are 4,094,125 Democrats and 3,175,302 Republicans plus another 1,123,664 voters, bringing the total to 8,393,091. As a result, the Democratic advantage increased from 915,043 to 918,823.
The GOP is still making solid gains, however, in the Southwestern Appalachian counties like: Westmoreland (641), Fayette (492), Cambria (353), Butler (331), Beaver (324), Washington (323), Somerset (266) and Lawrence (237).
Meanwhile, Democrats were able to run up the numbers in Philadelphia (6,778) and Allegheny (1,459). The Dems also made gains in Lehigh (320), Centre (221) and Dauphin (157) counties, home to Allentown, State College and Harrisburg respectively.
The Democrats also made progress in the collar counties around Philadelphia. They added 1,465 to their margin in Delaware County as well as 932 in Montgomery. The Dems even moved 373 voters closer in Chester, the one SEPA county where the GOP has the advantage.
Their brightest spot, though, was in Bucks County. This bellwether has gone for the popular vote winner in eight of the nine last presidential elections (the exception was 2004).
From May 2015 to August 2016, the Democratic advantage had dropped from 12,138 to 9,914. Over the past month, though, the Dems in Bucks gained a net of 108 voters.
The Republican strategy to win PA depends on peeling away counties like Bucks. If they’ve hit their ceiling there that would be a terrible sign for their prospects, although a month remains until the October 11th voter registration deadline.