Other than a number of states changing the voting rules in manners that violated their state constitutions. Judges can't order voting procedure changes, neither can governors. Only legislatures.
They have courts in each state that made rulings on those changes in voting procedures. In Texas the GOP led legislature sued the GOP governor for several changes he made in voting procedures and for the most part I believe the Governor won.
"The U.S. Supreme Court on Tuesday repudiated the most extreme form of a controversial legal theory that, if adopted, would have radically reshaped the way elections are conducted, giving state legislatures virtually unchecked power to decide election rules.
By a 6-to-3 vote, the court rejected the so-called Independent State Legislature theory advanced by the Republican-dominated North Carolina state legislature. Writing for the court majority, Chief Justice John Roberts said that the U.S. Constitution does not, as the lawmakers had claimed, insulate their actions from review by the state courts. To the contrary, he said, state legislative power is constrained by the federal and state constitutions, as well as ordinary state laws."
Interpretations of Elections Clause by constitutional scholars
constitutioncenter.org
"One unusual feature of the Elections Clause is that it does not confer the power to regulate congressional elections on states as a whole, but rather the “Legislature” of each state.
The Supreme Court has construed the term “Legislature” extremely broadly to include any entity or procedure that a state’s constitution permits to exercise lawmaking power. Thus, laws regulating congressional elections may be enacted not only by a state’s actual legislature, but also directly by a state’s voters through the initiative process or public referendum, in states that allow such procedures.
The Court also has held that a legislature may delegate its authority under the Elections Clause to other entities or officials. A few states have chosen to transfer power to draw congressional district lines from their respective legislatures to non-partisan or bipartisan “independent redistricting commissions.”