Cable news channels cover the Maryland, Washington and Wisconsin primaries on Tuesday evening, including CNN, Fox Business Network and Fox News Channel, which has a special report at 11 p.m.

Former “Apprentice” winner Bill Rancic and his wife, E! correspondent Giuliana Rancic, have struggled with infertility over the seasons of their reality show; and they get even more heartbreaking news on the fifth season premiere of “Giuliana & Bill” (Style at 8), as they learn Giuliana has breast cancer.

“The Biggest Loser” (NBC at 8) get a couple surprises, starting with a makeover with a fashion expert who takes them shopping for new clothes. And later, First Lady Michelle Obama appears via video to announce that they’ll all be heading to Washington to come visit the White House.

Bobby is falling hard and fast for Angie on Cougar Town” (ABC at 8:30), but he can’t help thinking her feelings might not be as strong. Meanwhile, Jules balks when Travis offers to be her wedding photographer.

Four singers say goodbye on the first results night of the season on “The Voice” (NBC at 9), and the field is narrowed down to 20.

BFFs Jess and Cece get in a fight on “New Girl” (Fox at 9) after Jess finds out that Cece’s keeping a secret, while Nick is forced to go to Schmidt for relationship advice when he’s torn between two women.

Even though “Dance Moms” (Lifetime at 9) ends for the season on Tuesday, you can still get your fix of hardcore dance instructors and stage moms: spin-off “Dance Moms: Miami” (Lifetime at 10:30) starts at a new studio in Florida with even more drama.

New reality competition series “No Kitchen Required” (BBC America at 10) sounds like a dream come true, as producers drop chefs into exotic locations around the world. But it’s not just a vacation, as they must compete to create the best meals inspired by local ingredients.

“Savage U” (MTV at 11), in which sex columnist Dan Savage travels arounds the country dispensing relationship advice to students on college campuses, is reviewed on Page .

News anchor Keith Olbermann makes his first stop, post-Current TV firing, on “Late Show With David Letterman” (CBS at 11:35), along with actress/singer Allison Williams; musical guests Lukas Nelson & Promise of the Real.

“The Tonight Show With Jay Leno” (NBC at 11:35) hosts actress Maya Rudolph, actor Jason Biggs and a performance by Gym Glass Heroes.

— Emily Yahr