On February 20, the Arkansas Libertarian Party state convention nominated 39 candidates for the state legislature. The party is ballot-qualified and nominates by convention. See this story. That is easily the highest number of nominees for the Arkansas legislature by any party, other than the Republican and Democratic Parties, since the 1890’s.
Even though Arkansas had no ballot access barriers for minor parties whatsoever before 1971, for some reason minor parties ran very few candidates for Arkansas state office during the 20th century. Thanks to Nick Sarwark for the link.