Governor Terry Branstad's Republican challenger, Tom Hoefling, has qualified for the primary ballot after submitting his nominating petitions on March 14, the final day. I don't see any way Hoefling could win a primary, but it will be interesting to see how large the conservative protest vote is against Branstad. GOP turnout should be larger than usual on June 3, because of competitive primaries for the U.S. Senate seat and the first, second, and third Congressional districts.
Last night the Iowa Secretary of State's office indicated that Jonathan Narcisse filed papers to run for governor as a Democrat. However, his petitions must not have had enough valid signatures, because his name does not appear on the full candidate list (pdf). The other long-shot Democratic hopeful, Paul Dahl, apparently never filed petitions. That leaves State Senator Jack Hatch as the lone Democratic gubernatorial candidate.
In other statewide candidate news, no Republicans stepped up to run against Attorney General Tom Miller or State Treasurer Mike Fitzgerald. By this time in 2010, Brenna Findley was already campaigning around the state against Miller, and two Republicans were running for treasurer.
As expected, Sherrie Taha is the Democratic candidate for secretary of agriculture; she will face GOP incumbent Bill Northey. Jon Neiderbach is the Democratic candidate for state auditor; he will face GOP incumbent Mary Mosiman, whom Branstad appointed last year. The secretary of state's race pits Democrat Brad Anderson against Republican Paul Pate. 2010 Libertarian nominee Jake Porter also plans to register for the ballot this summer.