Moore weighed in after Trump's official 2020 campaign launch on Wednesday and shared another Twitter user's video taken from the audience showing big cheers for the president.
"I watched the whole thing last night," the outspoken anti-Trump documentarian said about the rally to his 6 million followers. "I know no one wants to waste that kind of time even looking at him, but not wanting to see the enormity of the fight ahead doesn’t make it go away. He hasn’t lost one inch of his fired-up insane base. Are u ready?"
Moore was one of the very few high-profile liberals who foreshadowed Trump's victory in 2016. Last year, he predicted the president "will win" his re-election in 2020.
The Oscar-winning filmmaker has been one of the harshest critics of the president in Hollywood. He released an anti-Trump documentary in 2018 called "Fahrenheit 11/9" and starred in a one-man Broadway show called "The Terms of My Surrender" in 2017.
President Trump currently averages roughly 44 percent job approval according to Real Clear Politics, but his support among Republicans is overwhelming, averaging 90 percent within the party. Following Tuesday night's rally, the Republican National Committe (RNC) announced that the Trump campaign raised $24.8 million dollars in less than 24 hours.
"The enthusiasm across the country for this president is unmatched and unlike anything we’ve ever seen," RNC chairwoman Ronna McDaniel boasted on Twittter.