| 100% | NIXON | 5 | Only U.S. president to resign from office |
| 65% | SPIRO | 5 | First name of the second vice president to resign from office |
| 63% | SPIRO | 5 | With 60-Across, one of two U.S. vice presidents to resign from office |
| 57% | NIXON | 5 | The only US president to resign |
| 56% | PATENT | 6 | Lincoln is the only U.S. president to have one |
| 56% | TAFT | 4 | Only U.S. president also to serve as chief justice |
| 55% | PHD | 3 | Woodrow Wilson is the only U.S. president to have one |
| 55% | PHD | 3 | Woodrow Wilson was the only U.S. president to have one |
| 55% | MBA | 3 | Bush Jr. is the only U.S. president to hold one |
| 52% | FDR | 3 | U.S. president initials, only one to have served three terms |
| 51% | BEARD | 5 | Feature of five U.S. presidents from Lincoln to Harrison |
| 50% | ADAMS | 5 | The only U.S. president whose vice president ran against him to succeed him was John .... |
| 49% | BARACKOBAMA | 11 | U.S. president from 2009 to 2017 who was born August 4, 1961 (2 wds.) |
| 49% | LYNDONBJOHNSON | 14 | U.S. president from 1963 to 1969 who was born August 27, 1908 (3 wds.) |
| 49% | BILLCLINTON | 11 | U.S. president from 1993 to 2001 who was born August 19, 1946 (2 wds.) |
| 47% | BUCHANAN | 8 | James, only US president to remain a bachelor |
| 47% | TAFT | 4 | US President from 1909 to 1913 |
| 47% | OBAMA | 5 | US president from 2009 to 2017 |
| 46% | WITHOUTSAYINGTHEWORDI | 21 | Theodore Roosevelt, who was never known as the modest type, is the only U.S. president ever to give an inaugural address ... |
| 46% | GRANT | 5 | Ulysses S. ___, U.S. President who served from 1869 to 1877 |
| 46% | OBAMA | 5 | Only U.S. president born in Hawaii |
| 46% | BUCHANAN | 8 | Only U.S. president who never married |
| 46% | JFK | 3 | US president from 1961 to 1963: Abbr. |
| 46% | ELKS | 4 | Group to which five U.S. presidents have belonged, from Harding to Ford |
| 45% | GRANT | 5 | Ulysses S. ___, 18th President of the U.S.A. and the second to sport a beard in office |
| 45% | FDR | 3 | Initials of the only US president to be elected four times |
| 45% | AADDAAMMSS | 10 | Only U.S. president elected under the Federalist Party |
| 45% | WILSON | 6 | Only U.S. president buried in Washington, D.C. |
| 45% | TRUMAN | 6 | Harry S —, president of the US from 1945-53 |
| 45% | GRANT | 5 | Ulysses S —, president of the US from 1869-77 |