The State Supreme Court is upholding the law that requires Massachusetts residents to register to vote 20 days before an election.
The state's highest court says the 20 day requirement does not disenfranchise voters.
The Court ruling overturns a lower court decision that deemed the 20 day blackout period as unconstitutional.
Secretary of State William Galvin is a supporter of the 20 day rule, saying eliminating it would create administrative chaos.
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