Joe Scarborough at the "Morning Joe" panel during the NBCUniversal portion of the 2012 Winter TCA Tour. Frederick M. Brown/Getty Images With less than 100 days until the general election, conservative commentator Joe Scarborough on Tuesday night implored the Republican Party to fully disavow and remove Donald Trump from the party's ticket, pointing to a series of reverberating mistakes the New York businessman has made since accepting the presidential nomination as evidence the GOP "must dump" him.

"A bloody line has been crossed that cannot be ignored," Scarborough wrote in The Washington Post. "At long last, Donald Trump has left the Republican Party few options but to act decisively and get this political train wreck off the tracks before something terrible happens."

The "Morning Joe" anchor has appeared increasingly unnerved by Trump's refusal to tone down his occasionally authoritarian rhetoric. But Trump's suggestion Tuesday night that gun-rights advocates might try to stop Hillary Clinton from appointing Supreme Court justices was the tipping point.

"At this point, what else could Trump do that would be worse than implying the positive impact of a political assassination?" he asked.

Scarborough acknowledged that the GOP was in "uncharted waters" but said "that does not mean the way forward is not clear." He said it was time for the GOP to "start examining quickly their options for removing the Republican nominee."

During his Wednesday-morning broadcast, Scarborough continued to make his argument, again saying the real-estate magnate crossed the line into endorsing pseudo-fascist ideologies by leaving open the possibility of violence against Clinton. (Trump later said he was referring to political, not violent, action.)

"He crossed a lot of Rubicons yesterday," Scarborough said.

Scarborough and Trump's relationship wasn't always so fraught.

Earlier this year, the MSNBC host was accused of going too easy on Trump during interviews, calling pundits who failed to recognize Trump's success "jackasses."

But Trump soured on Scarborough months ago as the MSNBC host became increasingly critical of the Republican presidential nominee, particularly over about his skepticism of the ability of a Mexican-American judge to properly oversee a lawsuit against him.