Between control over amendments, debate, and when measures will be considered, the Rules Committee exerts vast power in the House. As such, the majority party will usually be very keen on controlling it tightly. While most House committees maintain membership in a rough proportion to the full chamber (If the majority party controls 55% of the House, it will tend to have 55% of committee seats), membership on the Rules Committee is disproportionately in favor of the majority party. Furthermore, the rules committee typically operates in a very partisan fashion, advancing rules to the floor on straight party line votes in nearly all cases.