US PRESIDENT Donald Trump’s administration has renewed its appeal to the Supreme Court to allow new restrictions on postal voting in time for the mid-term elections.

Sunday’s filing came after US District Court Judge Indira Talwani extended an order against the Postal Service enforcing Mr Trump’s executive order for the November elections.

States are already sending out postal ballot papers and election officials warn that there isn’t enough time to revise their systems.

With nearly a third of US voters using postal ballots, the battle could have major ramifications for this year’s elections, in which control of Congress is at stake.

Democratic Party-run states and voting rights groups say the changes are unconstitutional.

“With fewer than 60 days to go before the November election, there is not a shred of evidence that states could comply with it without disenfranchising voters who rely on mail ballots,” said Sophia Lin Lakin of the American Civil Liberties Union in a statement.

“Put plainly, this administration is racing to the Supreme Court to demand the right to enforce a rule that has no purpose other than to create chaos, undermine election integrity and rob eligible voters of their essential right to make their voices heard in our democracy.”