Donald Trump has reached an all-time high in a new national poll ahead of tonight’s Republican presidential debate in Las Vegas. The Monmouth University poll finds Trump has 41 percent support among Republican-leaning voters, nearly three times as much as his closest rival, Texas Senator Ted Cruz. At a rally in Las Vegas Monday, Trump was repeatedly interrupted by Black Lives Matter protesters. An MSNBC reporter attending the event said Trump’s supporters yelled “Shoot him!” “Kick his ass!” and even “Sieg heil”—a Nazi salute—as one protester was dragged away. Video shot by a BuzzFeed reporter shows rally-goers yelling “Light the (expletive) on fire!” at an African-American protester.