TOPEKA, Kan. (AP) — Democratic Gov. Laura Kelly's election victory suggested that Kansas repudiated past GOP fiscal policies, yet voters also encouraged top Republicans to pursue income tax relief by giving conservatives more power in the Legislature.

The contradiction is driving a political clash coming to a head quickly. The Republican-dominated state Senate gave first-round approval Wednesday to a tax bill and planned to take another, final vote Thursday to determine whether it moves to the GOP-controlled House. The proposal is designed to keep Kansas residents and businesses from paying hi...