December 11, 2012
States must make final decisions in any controversies over the appointment of their electors at least six days before the meeting of the Electors on December 17, 2012. This is so their electoral votes will be presumed valid when presented to Congress. The deadline for resolving any controversies is December 11, 2012.
Decisions by states’ courts are conclusive, if decided under laws enacted before Election Day, November 6, 2012.