Former President Donald Trump says he won't sign a pledge to support the Republican nominee if he loses the GOP presidential primary.
Trump said Wednesday there are "three or four people" he wouldn't support for president.
Trump's refusal to sign the pledge flouts a requirement for appearing in the first debate later this month and suggests he plans to make good on his threat to skip it.
Trump has repeatedly questioned why he should debate rivals he's leading in the polls.
Trump said he'll announce next week whether he'll be at the debate in Milwaukee.
