| 100% | YALIE | 5 | Cory Booker, once |
| 63% | SENATOR | 7 | Cory Booker, e.g. |
| 62% | SEN | 3 | Cory Booker, for one: Abbr. |
| 62% | SEN | 3 | Cory Booker's title: Abbr. |
| 61% | SEN | 3 | Cory Booker or Cory Gardner: Abbr. |
| 60% | SENATORS | 8 | Marco Rubio & Cory Booker |
| 59% | SEN | 3 | Title for Cory Booker (Abbr.) |
| 59% | SEN | 3 | Title for Cory Booker: Abbr. |
| 57% | SEN | 3 | Political title for Cory Booker: Abbr. |
| 56% | EZRA | 4 | Biblical book once combined with Nehemiah |
| 55% | ANNUAL | 6 | Book published once a year |
| 54% | SEN | 3 | Barbara Boxer or Cory Booker, for example: Abbr. |
| 53% | SCI | 3 | Poli-___ (undergrad major for Nancy Pelosi and Cory Booker) |
| 49% | VANNA | 5 | The Guinness book once dubbed her "television's most frequent clapper" |
| 49% | THELORAX | 8 | Once-ler's opponent in a Dr. Seuss book |
| 49% | MACMILLAN | 9 | Book publisher once run by a former Prime Minister |
| 49% | ANNUALS | 7 | Hard-backed, once-yearly comic strip books |
| 49% | ONLY | 4 | "You're ___ Old Once!" (Dr. Seuss book) |
| 47% | MAO | 3 | Author of a once-popular book of quotations |
| 44% | SEARS | 5 | Company that once offered "the Thrift Book of a Nation" |
| 43% | OED | 3 | Set of books once awarded to winners of Britain's "Countdown" game show, for short |
| 43% | TALES | 5 | "Star Wars ___," comic book series once published by Dark Horse Comics |
| 43% | LORAX | 5 | "The ___" (Dr. Seuss book with truffula trees and the Once-ler |
| 40% | UNION | 5 | "Star Wars: ___," four-issue comic book series once published by Dark Horse Comics |
| 39% | ABUM | 4 | Don Drysdale book "Once ___, Always a Dodger" |
| 37% | ERST | 4 | Once, once |
| 36% | DNC | 3 | Recent event, part of which Sen. Cory Booker likened to "Survivor" with interviews of all those voted off the island" (abbr.) |
| 36% | OLD | 3 | "Star Wars: Knights of the ___ Republic," monthly comic book series once published by Dark Horse Comics |
| 35% | UPON | 4 | It follows once |
| 35% | A#OFTIMES | 9 | More than once |