LAWRENCE, Kan. (AP) — Democratic challenger Paul Davis has conceded the Kansas governor’s race to Republican incumbent Sam Brownback.

The Associated Press has not yet called the race for Brownback, who built a lead in Tuesday’s election with most of the vote counted.

The governor successfully pushed the GOP-dominated Legislature during his first term to slash personal income taxes to boost the state’s economy. The state cut its top rate by 26 percent and exempted the owners of 191,000 businesses from income taxes altogether.

Davis argued that the cuts wrecked the state’s finances. He told supporters at a rally in his hometown in Lawrence that the state faces real challenges and people must work together.

Republicans painted Davis as a liberal supporter of Democratic President Barack Obama.