They sued the Secretary of State but relief must come from county election officials:

The Campaigns’ motion for injunction asks us to do what we said could not be done in Jacobson: order a nonparty county official to do something contrary to state law. Since the Secretary and the election board do not conduct the signature matching process, are not the election officials that review the voter’s signature, and do not control whether the signature matching process can be observed, the Campaigns’ alleged injury is not traceable to the Secretary. And the Secretary does not have the authority to redress it. Further, to the extent the requested injunction sought to enjoin parties other than the Secretary and election board, that would exceed our authority because these other parties were not before the district court and are not before us.