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MeasureCollin DuelRHouse 31Mark LepakRHouse 9
SeatHouse District 31House District 9
PartyRepublicanRepublican
CountiesLogan, OklahomaRogers, Tulsa
LeadershipAssistant Majority Floor Leader—
Committees85
Effectiveness score1.361.32
Chamber rank19 of 9922 of 99
Bills & JRs authored3269
… passed committee1516
… passed own chamber1411
… passed both chambers106
… became law85
Carried in other chamber (law)15 (6)41 (12)
Bills coauthored1241
Budget-process measures (not scored)00
Floor roll calls19321932
Missed votes97 (5.0%)166 (8.6%)
Party unity (contested votes)88.8%87.1%
Top topicsCourts & civil law (10); Criminal justice & public safety (9); Business, jobs & the economy (4)State government & agencies (18); Budget & taxes (15); Courts & civil law (9)
Lobbyist-reported expenditures, 2025–26109 items, $4,47459 items, $1,663
Capitol officeRoom 456Room 453
Capitol phone(405) 557-7350(405) 557-7380

Download CSV Free CSV: House/Senate directory rows. Computed metrics: Capitol Pro (coming soon). Permalink: /legislators/compare?m=h-collin-duel,h-mark-lepak

Effectiveness figures follow the published formula. Campaign-finance figures are not included in comparisons.

Read with care. This is a transparent count of how far a member's own bills went, not a judgment of the member's work. It does not weigh a bill's importance, and it misses amendments, conference work, constituent service and blocking bad bills. Leadership files many shell bills that never move; members elected mid-term had less time; coauthors are read from action text and may be incomplete. Data: Open States roll calls and actions (copied Oct. 1, 2026); official records are on oklegislature.gov.

Sources for this page

Bill, action and vote data from Open States bulk data (public domain dedication; attribution appreciated). Official bill text and votes are linked on oklegislature.gov, not copied.

Copied from public pages of the Oklahoma House of Representatives and the Oklahoma State Senate. Neither OK Capitol Guide nor this information, as presented here, is endorsed by the Oklahoma House of Representatives or the Oklahoma State Senate.