It all started back during the 2016 election. The organization strives to keep voters full and satisfied as a sort of reward for voting despite long lines at the polls. "Fortunately Pizza to the Polls is here to deliver the one thing that pairs so perfectly with freedom: piping hot 'za," according to the org's website.
To request a pie, you just plug in the address and upload a photo to prove that there's a line of people. From there, Pizza to the Polls uses an app called Slice to find nearby pizzerias that will deliver to hungry voters. A quick scroll through PttP's Twitter account reveals the group typically sends each location between 4 and 16 pizzas. On the other end of things, you can use the site to donate money to the pizza fund ($10 a pie, though the site accepts any amount).
As of November 5th, a total of $96,719 has been contributed to Pizza to the Polls since 2016, and 1,108 pizzas have been sent. Right now, the nonprofit has a pizza fund of $25,102 and any money leftover when voting ends will go toward future voters or marchers.