“Nick News: Presidents” (9 p.m., Nickelodeon): Even though they’re too young to

“Nick News: Presidents” (9 p.m., Nickelodeon): Even though they’re too young to vote, kids will get a window into the election process in this special, the first of three on the topic. The programs, hosted by Linda Ellerbee, explain how presidents are elected and also will look at the candidates. The other specials will air in March and October. Kids can “vote” all this week for their favorite candidate at www.nick.com/kpp.

“Terminator: The Sarah Connor Chronicles” (8 p.m., Fox): Arnold may be missing in action, but “Terminator: The Sarah Connor Chronicles” will still make your pulses race. Lena Headey steps in to play the title character, who is doing her best to protect her son (Thomas Dekker) and keep the world safe from those killer cyborgs.

“Comanche Moon” (9 p.m., CBS): This three-part miniseries serves as a prequel to the highly acclaimed “Lonesome Dove.” It focuses on the formative years of Texas Rangers Augustus “Gus” McCrae (Steve Zahn) and Woodrow Call (Karl Urban). Val Kilmer, Linda Cardellini and Wes Studi also star.

“Masterpiece” (9 p.m., PBS): It’s Austen power as “Masterpiece” (formerly “Masterpiece Theatre”) rolls out adaptations of all six Jane Austen novels beginning with a new production of “Persuasion.” Sally Hawkins stars as the heartbroken young woman yearning to reunite with the man (Rupert Penry-Jones) whose proposal she rejected years earlier. Anthony Head (“Buffy the Vampire Slayer”) also stars.