That makes no sense whatsoever. Particularly in light of the Guarantee Clause of Article 4 Section 4, which not only guarantees a “republican form of government” rather than a rogue, totalitarian one—but also guarantees protection against “domestic violence”, and something as serious as fraudulent electoral certificates qualifies as that.
If a state legislature in a state where the legislature already knew the election process was illegal didn’t take action before December 14th to correct the fiasco, then the illegal election results would stand
Strange as it may seem, in the U.S. Constitution there is no requirement for states to let voters participate in a presidential election. At least 7 of the original 13 states chose their electors through some method other than a popular election, such as having the electors selected by the legislature or appointed by the governor.
The Constitution isn't kidding when it says: "Each State shall appoint, in such Manner as the Legislature thereof may direct, a Number of Electors (etc.) ..."