As the state's attestation requirements for mailed-in votes is only imposed in a few states, and the state has not advanced any interest behind it, lower court's entry of consent judgement abrogating the requirement should not be stayed. The elevated standard for stays close to an election is met, as the last election didn't have the requirement, and the state hasn't suggested that it would confuse voters. Political party has standing to intervene for the purposes of the pending appeal.
First Circuit: T-Mobile Northeast LLC v. The Town of Barnstable
"...a salmagundi of affirmative defenses."
Grounds for denial of intervention of right (or, in the alternative, permissive) did not have to be extensively described by the court -- the decision is reviewed for abuse of discretion in light of the record.
No abuse of discretion of denial of intervention of right by citizens attempting to stop cell-phone tower on church steeple where it is apparent that the existing parties will attempt to vindicate the specific statutory protections that the citizens intended to raise; the litigation strategy of the existing parties doesn't enter into the calculus.
No abuse of discretion in denial of permissive intervention, as existing parties would raise the smae issues, the putative intervenors had no cause of action under state law, and it's really important to build cell phone towers quickly.
T-Mobile Northeast LLC v. The Town of Barnstable