The Sixth Circuit just overturned Judge Dlott's order that had attempted to block Ohio's law allowing challengers at the polls. Here's the relevant analysis:
Although it is possible that the plaintiffs will succeed on the merits, it is not likely. Neither district court relied upon racial discrimination as a basis for finding a likelihood of success on the merits. Instead, the courts below found a likelihood that the right to vote would be unconstitutionally burdened by having challengers present at the polling place, and that the presence of such challengers was not a sufficiently narrowly tailored way to accomplish legitimate government interests. Of course if we assume that the presence of challengers burdens the right to vote, it may certainly be argued that a more narrowly tailored approach is available. But the plaintiffs do not appear likely to succeed on the necessary primary finding that the presence of challengers burdens the right to vote. Challengers may only initiate an inquiry process by precinct judges, judges who are of the majority party of the precinct. The lower court orders do not rely on the likelihood of success of plaintiffs’ challenges to the procedure that will be used by precinct judges once a challenge has been made. Longer lines may of course result from delays and confusion when one side in a political controversy employs a statutorily prescribed polling place procedure more vigorously than in previous elections. But such a possibility does not amount to the severe burden upon the right to vote that requires that the statutory authority for the procedure be declared unconstitutional.
The balance of harms in this case is close. If plaintiffs are correct in their view of the law, assuming they have standing because of the likelihood of significant delay, they will suffer irreparable harm. On the other hand, if the plaintiffs are not correct in their view of the law, the State will be irreparably injured in its ability to execute valid laws, which are presumed constitutional, for keeping ineligible voters from voting. In particular, the State’s interest in not having its voting processes interfered with, assuming that such processes are legal and constitutional, is great. It is particularly harmful to such interests to have the rules changed at the last minute.
On balance, the public interest weighs against the granting of the preliminary injunction. There is a strong public interest in allowing every registered voter to vote freely. There is also a strong public interest in permitting legitimate statutory processes to operate to preclude voting by those who are not entitled to vote. Finally, there is a strong public interest in smooth and effective administration of the voting laws that militates against changing the rules in the hours immediately preceding the election.