FILE - In this April 20, 2019 photo, Democratic presidential candidate Sen. Cory Booker listens during a campaign event at a restaurant in Las Vegas. Booker rose to fame as a New Jersey mayor and senator but his mom and other relatives have lived in Las Vegas for years. Now, he's working those local connections to set himself apart from the crowded pack in a state that could be decisive. (AP Photo/John Locher, File)