Another Iowa Republican has decided not to run for the U.S. Senate seat opening up after next year.

Iowa Secretary of Agriculture Bill Northey announced on Thursday he would not run to replace five-term Democrat Tom Harkin in 2014.

“I feel at this time I can be more effective serving Iowans as secretary of Agriculture rather than engaging in a Senate campaign,” Northey said.

However, Northey did express support for Rep. Steve King, R-Iowa, who has not announced his intentions for the race.

“Congressman Steve King has been a strong conservative leader in Washington and would serve our state well in the Senate,” Northey said in a statement. “Should he decide to run, he would have my full support.”

Currently, Rep. Bruce Braley, D-Iowa, is the only candidate to officially announce his candidacy for the open seat.