In a post to his Twitter account announcing his decision, Northey said he hoped Rep. Steve King (R-Iowa) would jump into the race.

The Des Moines Register reported last month that King had hired a Virginia-based political consultant that helped raise money for other successful Tea Party candidates, including Sen. Ted CruzRafael (Ted) Edward CruzCruz's Dem challenger slams Time piece praising Trump Race for Republican Speaker rare chance to unify party for election 32 male senators back Senate women's calls to change harassment rules MORE (R-Texas). But in an interview with local radio station KSCJ last week, King said he is "still on the bubble" about a possible run.

Northey told the Register he had made his decision "after talking with my family and thoughtful consideration."

In an interview last week with Radio Iowa, Northey said it would be difficult to walk away from a farm that has been in his family since the 1930s.

"I do have other family there that can farm it, that I could rent to,” Northey said, “but it wouldn’t be the same as me being able to get out and farm myself.”

The Republican nominee will likely face Rep. Bruce BraleyBruce Lowell BraleyOPINION | Tax reform, not Trump-McConnell feuds, will make 2018 a win for GOP Ten years later, House Dems reunite and look forward Trump: Ernst wanted 'more seasoning' before entertaining VP offer MORE (D-Iowa), who announced his intention to run in February.