Historical clue formulations

• Party leader? — 2023-12-23
• Snack brand that originated in 1919 — 2023-11-11
• She's entertaining — 2012-01-01
• Eater seater, sometimes — 2011-01-15
• She's entertaining — 2008-03-08
• Party person — 2005-06-26
• First lady, often — 2005-05-07
• Cupcake brand — 2003-07-22
• Party leader, perhaps — 2002-08-24
• Twinkies maker — 2001-02-20
• Little Debbie competitor — 1998-03-06