The policy changes at the Postal Service created "a substantial possibility" that "voters may be disenfranchised," Bastian said during the hearing, adding that "harm has already taken place."

"Substantial evidence has been presented that these transformative changes have been done by the Postal Service which has made mail delivery slower and less efficient," Bastian said.

The plaintiffs submitted more than 70 public remarks, including tweets the President has made in attacking mail-in voting.

At one point during the proceedings, Judge said it was "ironical" that the US attorneys saw no issues with going to polls to vote during the global coronavirus pandemic, but wanted to argue the case via videoconference.

"While we are exploring our legal options, there should be no doubt that the Postal Service is ready and committed to handle whatever volume of election mail it receives.

Our number one priority is to deliver election mail on time," USPS spokesperson Dave Partenheimer said.

Lee Moak, chair of the Election Mail Committee of the Postal Service's Board of Governors, added, "Any suggestion that there is a politically motivated attack on the efficiency of the Postal Service is completely and utterly without merit."

The ruling comes as some Americans are beginning to receive their mail-in ballots and cast their votes for this November's presidential election.

Some of the Democratic state officials who brought the lawsuit cheered the judge's decision.

"Huge victory to protect the Postal Service -- Washington state federal judge blocks unlawful USPS policies delaying mail and impacting elections," tweeted Washington state Attorney General Bob Ferguson, who led the coalition of Democratic attorneys general.

Plaintiffs claim DeJoy enforced "Leave Mail Behind" policy

Since his arrival at the USPS in June, DeJoy oversaw the implementation of only one major initiative: restricting late and extra trips that mail trucks take.