Historical clue formulations

• Checked a box, maybe — 2021-12-12
• "I ___" (sticker message) — 2019-10-06
• Made an X, maybe — 2012-11-21
• Went for a ticket, in a way — 2012-09-05
• Supported a runner — 2009-02-07
• Picked a ticket — 2008-12-12
• Helped someone get a seat — 2007-09-07
• Decided collectively — 1996-01-14
• Cast a ballot — 1995-11-26
• Pulled a lever, maybe — 1995-09-10