On June 14, the Arizona Libertarian Party asked the Ninth Circuit to rehear Arizona Libertarian Party v Hobbs, 17-16491. This is the case in which the original panel of the Ninth Circuit upheld the 2015 election law that requires Libertarians running in the Libertarian primary to submit thousands of signatures of party members in order to get themselves on the primary ballot. The law also allows independent voters to sign such petitions.

The law has had the effect of keeping all Libertarians off the primary ballot (and hence the general election ballot) for congress and partisan state office, ever since it was passed. Meanwhile, the law permits the Green Party to nominate with as few as one write-in vote in the Green primary.