President Donald Trump has been gaining ground in the battleground states that will have a big impact in determining whether he or Democratic presidential nominee Joe Biden wins the White House in November.

Among the six states President Trump won in 2016, there is a robust surge of voter registration for GOP over four years ago.

In Florida, Democrats have gained more than 289,000 voters to their net total, about a 5.8% change compared to more than 442,000 voters for Republicans, a nearly 10% change, according to CBS News.

The change is most significant in heavily blue Miami-Dade County, where Hillary Clinton beat Trump by 29 points in 2016, Republicans added a net 22,986 more voter registrations between March and the end of August while Democrats added 11,142 voters.

In North Carolina, Democrats have seen the greatest overall 6.1% decrease in net registered voters over November 2016. Republicans have added nearly 3.5% more. 

In Pennsylvania, some 7,500 more Democrats changed parties this year than Republicans. Republicans gained a net 135,619 voters between June’s primary and the final week of September, compared to 55,985 for Democrats, reported NBC News.

“We know that in 2016, with only about 36% of registrations, we won by 58%,” said Justin Behrens, chair of the Luzerne Republican Party. “Now that registration number is even higher. It shows that the numbers are going to skew way more toward President Trump than before.”

In Arizona, Democrats are closing the gap on net registrations with a more than 18% increase in about four years compared to 12% for Republicans. Meanwhile, in the states’ biggest battleground, Maricopa County, Republicans maintain their advantage. 

The Trump campaign on Thursday, Oct. 1, touted an “incredible” number of attendees who were not Republican at the president’s rally in Duluth, Minnesota. 

“This is incredible,” wrote Ryan Fournier, founder and co-chairman of TrumpStudents, “60% of those attended Trump’s rally in Duluth, MN were not Republican. And 17% did not vote last cycle.”

“The silent majority is waking up!” he added.

According to NCB News, several Democratic strategists “are deeply disturbed” by their party’s failure and blamed the Biden campaign for lack in-person outreach. 

The Biden campaign had ditched a ground game for virtual outreach, citing CCP (Chinese Communist Party) Virus concerns. The Biden team announced Thursday that it is launching door-to-door canvassing in key states with just weeks remaining in the presidential race.

“Our voter contact operation is the most innovative and technologically advanced of any presidential campaign in history, and it has been thriving in this unprecedented environment,” Biden campaign manager Jenn O’Malley Dillon said, reported The Associated Press.

“We’re now expanding on our strategy in a targeted way that puts the safety of communities first and foremost and helps us mobilize voters who are harder to reach by phone now that we’re in the final stretch—and now that Americans are fully dialed-in and ready to make their voices heard.”