Election experts warn the hours after polls close in November could see attempts to sow distrust or claims of 'foreign interference.'
The ruling permits use of a database that critics say is unreliable and could lead to eligible citizens being wrongly purged from voter rolls.
The court's ruling clears the way for a voter ID verification program that voting rights groups warn could wrongly flag eligible citizens as non-citizens and risk disenfranchisement.
The court revived an expanded immigration database the administration says targets voting by noncitizens, though critics warn it could disenfranchise eligible voters.
Crystal Mason, originally sentenced to five years after casting a provisional ballot that was never counted, had fought the conviction for nearly a decade.
Observers warn that deploying troops to polling places would run counter to longstanding state and federal restrictions on military involvement in elections.
Governor's office says new laws bolster vote-by-mail security and criminalize unauthorized seizure of ballots or election records
The court left in place a lower court's temporary hold on new rules that would have limited mail-in voting.
New legal action cites federal law barring military and armed law enforcement personnel at polls amid Trump administration statements suggesting officers could be present on Election Day.
The justices rejected a March executive order that would have restricted ballot delivery, but Trump's response signals ongoing legal battles over voting access.
The Supreme Court has rejected the Trump administration's attempt to restrict mail-in voting ahead of the midterm elections, according to voting rights advocates.
Ruling allows states to continue sending mail ballots under long-standing procedures as voting is already under way in the midterm elections
Russian Foreign Ministry spokesperson Maria Zakharova said Chisinau has no authority to strip Russian citizens living in Transnistria of their right to vote, according to TASS.
Advocacy organizations including the Democracy Defenders Fund, Campaign Legal Center and ACLU are broadening lawsuits against executive orders they say undermine states' authority over elections and curb voting rights.