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Bill

Bill

SB 129

Revise voter registration laws to include party preference

2025 Regular Session Introduced by Jeremy Trebas

Montana bill requiring party preference data in voter registration died in legislature after House committee concurrence in 2025.

(S) Died in Process
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WeVote Research Nonpartisan
Bill Summary · SB 129

Legislative bill overview

SB 129 would modify Montana's voter registration system to require or track party preference as part of the registration process. The bill progressed through the House State Administration Committee with concurrence but ultimately died in the legislative process in May 2025 without passage.

Why is this important

Voter registration data directly affects election administration, party access to voter rolls, and primary election eligibility in many states. Changes to registration requirements impact how quickly citizens can register, what information government collects, and how political parties can communicate with or identify potential supporters.

Potential points of contention

  • Privacy concerns: Whether collecting party preference data creates unnecessary personal political information in government databases accessible to parties
  • Independent voter impact: Whether mandatory party preference selection discourages unaffiliated voters or complicates their registration process
  • Primary election access: Whether tracking party preference would change eligibility rules for participating in primary elections, affecting closed vs. open primary structures
  • Administrative burden: Implementation costs and whether county election officials support adding another data field to registration systems

Compiled from official sources — confirm details with the bill’s official record.

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