The Arizona Green Party has begun petitioning to get back on the ballot for the 2020 election. It needs 31,685 signatures by February 28, 2020. This is the highest number of signatures that Arizona has ever required for new parties; the number is high because turnout was so strong in November 2018. If the party succeeds, this will be the most difficult petition requirement that the Green Party will have overcome since 2010, when it got on in Texas.
Back in 1968, when the Arizona law was different, it was possible to put a new party on the ballot in Arizona with just 358 valid signatures.