The second Republican debate, a three-hour affair that veered from sophomoric insults to policy to late-night silliness, ended after 11 p.m. Wednesday, with an outsider candidate — former tech executive Carly Fiorina — challenging front-runner Donald Trump in a way few rivals have.

Fiorina, who hadn’t even been on the main stage for the August debate, jabbed Trump for his insults of her appearance, and for his record as a businessman. She pointed out that Trump had lost money in his famous At