Donald Trump has declared an unsupported victory in a speech from the ceremonial East Room of the White House - with millions of ballots yet to be counted.
Several top Republicans and conservative commentators are expressing alarm at Trump's unsubstantiated comments.
Speaking on ABC News, former New Jersey Governor and Trump adviser Chris Christie called the president's speech the wrong move - both strategically, and as president.
"It's a bad strategic decision," he said. "It's a bad political decision."
Rick Santorum, former Republican Senator from Pennsylvania, said he was "very distressed" by Trump's comments. "Using the word fraud... I think is wrong," he said on CNN.
And Ben Shapiro, a conservative commentator and critic of Trump, tweeted calling the comments "deeply irresponsible".
https://twitter.com/benshapiro/status/1323890527767416834