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COSenate
CO Senate
Incumbent: John W. Hickenlooper · Democrat
24
Candidates
Jun 23
Primary
Nov 3
General
11d
Until Primary
Filing
Closed
Primary
Jun 23
General
Nov 3
Decided
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Voter Action
Registration deadlineJun 15, 2026
Vote by mailYes ✓
Voter ID requiredNo
Early votingYes ✓
Runoff riskNo