A new Siena College poll of registered voters finds that President Joe Biden’s lead in New York state is shrinking. Plus, New York City pools are set to open next week, but a lifeguard shortage could limit swimming access. And finally, WNYC’s Janae Pierre visits Pristine Jewelers, the go-to spot for hip hop stars like Fat Joe, Cardi B and DJ Khaled. Some of their works are on display at the American Museum of Natural History’s new exhibit, “Ice Cold: An Exhibition of Hip Hop Jewelry.”