Liberal filmmaker Michael Moore on Wednesday threatened any Senate Democrats who do not block President Trump’s Supreme Court nominee with primary challenges in their next election.

Trump announced his pick of Judge Neil Gorsuch to succeed the late Justice Antonin Scalia on Tuesday, setting up a fierce confirmation battle between Democrats and Republicans.

This Supreme Court pick was Obama's to make and it was stolen by Republicans. Democrats had better block this and demand a nom we approve. — Michael Moore (@MMFlint) February 1, 2017

Senate Dems, let's be very clear: You will filibuster & block this SC nom or we will find a true progressive and primary u in next election. — Michael Moore (@MMFlint) February 1, 2017

Trump repeatedly vowed during his 2016 presidential run that he would fill Scalia’s vacancy with a conservative similar to the late judge. Gorsuch, a judge on the 10th Circuit Court of Appeals, seemingly fits that mold.

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Gorsuch will face an uphill confirmation process, however, due to the stakes surrounding the makeup of the nation's highest court.

Senate Democrats remain bitter about GOP efforts last year halting Merrick Garland, former President Obama’s Supreme Court nominee, from getting a vote or even a hearing.

Sen. Jeff Merkley Jeffrey (Jeff) Alan MerkleyThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Sunday shows - Trump team defends coronavirus response Oregon senator says Trump's blame on 'forest management' for wildfires is 'just a big and devastating lie' MORE (D-Ore.) has vowed to filibuster any nominee from Trump, meaning Gorsuch would require 60 votes under current rules.