Republicans, in revolt, urge party to de-fund Trump

"We believe that Donald Trump's divisiveness, recklessness, incompetence, and record-breaking unpopularity risk turning this election into a Democratic landslide," read a draft text of the letter to Republican National Committee Chairman Reince Priebus, which was obtained by the Politico newspaper.

It called for an "immediate shift" of party funding Senate and House races, to aid down-ballot Republicans whose own election prospects have been harmed by Trump's unpopularity.

"This should not be a difficult decision, as Donald Trump's chances of being elected president are evaporating by the day," the letter said.

The letter cited various actions by Trump that the signers said have "alienated millions of voters of all parties."

"Those recent outrages have built on his campaign of anger and exclusion, during which he has mocked and offended millions of voters, including the disabled, women, Muslims, immigrants, and minorities," the letter said, according to Politico.

"He also has shown dangerous authoritarian tendencies, including threats to ban an entire religion from entering the country, order the military to break the law by torturing prisoners, kill the families of suspected terrorists, track law-abiding Muslim citizens in databases, and use executive orders to implement other illegal and unconstitutional measures."