His 26-year-old son-in-law, Michael Alfonso, is running in Tuesday's Republican primary for Wisconsin's 7th Congressional District — the seat Duffy himself once held. On NewsNation Monday morning, host Marni Hughes pressed both men on the nepotism charge during a live campaign-trail interview in Wausau. "[Y]ou've got to work your tail off," Duffy said at the Blue Willow Diner, invoking his own first race against a 42-year Democratic incumbent. "[N]ot because of me, not because of President Trump — but President Trump has endorsed him," Duffy said. "The idea of using family connections to get ahead is not a new thing," Brendan Glavin, director of insights for OpenSecrets, told the Badger Project.