They have every intention of cheating the mail in vote. Flooding the POTUS rally with fake requests for tickets is just a practice run.

"Opponents of President Donald Trump celebrated the fact that his rally at the BOK Center in Tulsa, Oklahoma, on Saturday night was only half-full, claiming credit for a TikTok prank that flooded the Trump campaign’s website with fake RSVPs."

https://www.breitbart.com/2020-election/2020/06/20/trump-foes-celebrate-zoomers-on-tiktok-pranking-campaign-with-fake-rsvps-tulsa/