Colorado Republican Cory Gardner, the minority whip in the state House, is challenging one-term Democratic Rep. Betsy Markey in the state’s 4th District in northern and eastern Colorado.

Gardner, who’s served in the Colorado House since 2005, told CQ Politics that he will formally announce his candidacy later Thursday. “It’s time that we stopped business as usual in Washington,” Gardner said, adding that federal spending during both Democratic and Republican rule has been “absolutely out of control, and it’s got to stop.”

“The 4th Congressional District is a conservative, common-sense Colorado district, and no one will reflect its values better than me,” Gardner said.