Historical clue formulations

• Biden and Bush, once, in brief — 2026-07-12
• No. 2's — 2026-02-01
• Air Force Two passengers, in brief — 2025-08-20
• Number twos, in brief — 2025-07-06
• Some corp. execs — 2025-01-25
• D.C. tiebreakers, at times — 2023-10-22
• Biden and Harris, notably, in brief — 2022-11-27
• Seconds, in brief — 2022-08-14
• 4-Down and others, for short — 2020-02-11
• Biden and Pence, informally — 2018-01-22
• No. 2's — 2017-10-29
• Some execs — 2017-06-02
• Biden and Pence, in brief — 2017-03-27
• No. 2s — 2015-12-30
• Some execs — 2012-11-11
• No. 2s — 2012-09-24
• Tie-breaking voters in the Sen. — 2012-03-27
• Number twos, for short — 2012-02-02
• #2's, for short — 2009-11-24
• They may report to C.E.O.'s — 2007-08-01
• Some corp. execs — 2003-07-13
• F.D.R. had three — 1994-07-16