Rep. Raul Labrador (R-Idaho) will remain in the House rather than challenging Idaho Gov. Butch Otter (R) in a primary election, he announced Wednesday.

"I've decided to end all the speculation and announce that I have no plans at this time to run for governor," Labrador said at a press conference, according to The Spokesman-Review. "I do not feel that I have yet completed the mission you sent me to Congress to do. There is still much work to be done. Whether at the state or the national level, I will always be an advocate for Idaho." 

Labrador, a Tea Party favorite who upset the establishment's choice to win his seat in 2010, said he never "seriously" thought about running against Otter. But when he started to tell supporters he was ruling it out months ago, Labrador said, they pressed him to reconsider.

"Running against Gov. Otter would have been a tough race," he said.

Labrador has been a thorn in the side of GOP leadership in Congress at times, including a vote against John BoehnerJohn Andrew BoehnerA warning to Ryan’s successor: The Speakership is no cakewalk With Ryan out, let’s blow up the process for selecting the next Speaker Race for Republican Speaker rare chance to unify party for election MORE (R-Ohio) for Speaker. He was also an active voice in the immigration debate before leaving negotiations with Democrats earlier this summer.