The Clinton campaign has spoken out in support of the Electoral College members' demand for information on Russia's involvement in tampering with the 2016 election.

Ten electors addressed an open letter to Director of National Intelligence James Clapper calling for access to intelligence prior to the 19 December vote that will finalise the results of the race.Their letter came after the CIA's determination that Russia tampered with the US election in order to sway votes in Donald Trump's favour – an accusation that Hillary Clinton herself made during the third presidential debate.

"The bipartisan electors' letter raises very grave issues involving our national security," said Hillary Clinton's top adviser John Podesta. "Electors have a solemn responsibility under the Constitution and we support their efforts to have their questions addressed."

"Each day that month, our campaign decried the interference of Russia in our campaign and its evident goal of hurting our campaign to aid Donald Trump,” he added. "Despite our protestations, this matter did not receive the attention it deserved by the media in the campaign.

"We now know that the CIA has determined Russia's interference in our elections was for the purpose of electing Donald Trump. This should distress every American."

Mr Trump has dismissed the the CIA's reported findings, calling them "ridiculous". The transition team issued a rebuke of the agency's assessment Friday night.

"These are the same people that said Saddam Hussein had weapons of mass destruction," the team incorrectly said in their statement. "The election ended a long time ago in one of the biggest electoral college victories in history. It's now time to move on and 'Make America Great Again'."