On July 15, Howie Hawkins, Green Party presidential nominee, sued Oklahoma over the $35,000 filing fee for president. The fee is only paid by presidential candidates who are not the nominees of a qualified party. There is a petition alternative to the filing fee, but it requires 35,592 signatures. Hawkins v Ziriax, w.d., 5:20cv-687.
No filing fee in Oklahoma exceeds $2,000, except for the presidential filing fee. The U.S. Supreme Court in Anderson v Celebrezze said states should not require more difficult ballot access requirements for independent presidential candidates, than for independent candidates for other office.