The USPS implemented this month, with modifications that will slow delivery and capacity as the United States gears up for the November election. In response, Americans are flocking to USPS's website to buy merchandise in an effort to support the postal service.

The has a wide range of products available for purchase including: Sweatshirts, T-shirts, kids costumes, dog costumes, tote bags, stamps and toy trucks.

The website is having a "flash sale" through the end of Sunday with an offer of 50 per cent off of select retail items. And many of the products are already sold out. The express mail T-shirt, USPS backpack, blue hoodie sweatshirt and Earth Day coasters are all labeled as "discontinued" on the website.

Under Postmaster General Louis DeJoy's administration, the USPS has slowed delivery, removed high-speed letter sorters from commission and issued a stark warning to election officials that mail-in ballots will no longer automatically be moved as priority mail. The postal service has also started reducing post office operating hours across several states, cut overtime for postal workers and removed some of their .

The stakes are high in the run-up to the 2020 presidential election -- more people are expected to vote by mail versus in polling places because of the risk of coronavirus, and to make it easier to do so. Although the USPS has repeatedly tried to reassure voters they can handle the influx of mail-in ballots, to that slowdowns in delivery could cause ballots to show up late and not be counted.

Democrats are now increasing demands that DeJoy rescind his changes as the USPS begins to prepare for a flood of mail-in ballots.

Comedian Billy Eichner for the USPS, saying, "Nothing says summer like ordering stamps while crying."

Lisa Kovitz, a managing director at Edelman in New York City, buys stamps often and she recently bought a T-shirt from the USPS website. "While my purchase is small, I wanted to help," she told CNN Business. Kovitz also noted that she often buys from eBay sellers who primarily rely on the post office.

The American Postal Workers Union is continuing to share its support for USPS on Twitter. On Sunday, the union , "The Postal Service handles 3 billion pieces of mail in the week before Christmas. An election won't be a problem - as long as DeJoy lets postal workers do our job!"