Since each State is autonomous is forming election laws, each State can tell the other States to piss off regarding their procedures. Please explain that Constitutional protection the States posses. Do they not have rights in relation to their own laws? Even in Federal elections Article II grants them this right.
There might have been some semblance of combining arguments via other cases into one but that never formulated due to the piling on perhaps.
In any case, there are other avenues the Court might grant cert. Don't get your hopes up though.
More importantly, this is further evidence that states can apparently tell the Federal government to piss off in how it choses to enact, or not enact, Federal law adequately or correctly.
I believe the last original jurisdiction case was when a state like Nebraska tried to sue Colorado for not following federal laws with regard to dope smoking, and that state lost.
Expect a lot more states to start taking advantage of that apparent freedom, both in good ways and bad.