Both Tiffany and Don Jr. were effective. Tiffany was winsome and did more to personalize Donald Trump than Melania last night. Meanwhile, Don Jr. gave a truly accomplished speech. He fleshed out the image of his Dad as a “working class billionaire” and hit populist notes, although in the context of a surprisingly conservative framework. He plugged school choice, deregulation and even said “freedom requires a limited government,” a sentiment that has been entirely missing from his father’s campaign. This may be reading too much into it, but you could see the outlines of a conservative-populist synthesis in the speech. Regardless, Trump’s children definitely helped his cause at the podium tonight.