Thanks to Iowa’s non-partisan redistricting process, we have an unusually large number of competitive state legislative districts. In any given general election, depending on candidate recruitment, between one dozen and two dozen of the 100 Iowa House districts could be up for grabs. Democrats and Republicans spend big money on a much smaller number of districts; this year, only seven Iowa House races involved a large amount of television advertising. But the parties and candidates invest in direct mail and/or radio commercials in many more places than that.

Republicans go into election day favored to hold their Iowa House majority, which now stands at 53 seats to 47. Carolyn Fiddler has pegged seven “districts to watch” at her Statehouse Action blog, and in September, the Des Moines Register’s Jason Noble discussed five districts he viewed as “key to Iowa House chamber control.” I see the playing field as much larger.

Follow me after the jump to review 20 Iowa House seats that will determine control of the chamber for the next two years.

Caveat: most years, there’s at least one shocking result in an Iowa House district neither party had their eye on. I’m thinking about Tami Weincek defeating a longtime Democratic incumbent in Waterloo in 2006, Kent Sorenson defeating a Democratic incumbent in Warren County in 2008, three Democratic state representatives who had run unopposed in 2008 losing in 2010, and Democrat Daniel Lundby taking out the seemingly safe Republican Nick Wagner in the Linn County suburbs in 2012. Wagner had run unopposed in the previous election.

So, while I don’t expect any of the “favored” seats discussed below to change hands, I would not rule out a surprise or two. That would be excellent news for the stealth challenger’s party.

Republican Amy Sinclair and Democrat Dick Schrad have launched campaigns in the new Iowa Senate district 14, an open seat in south-central Iowa. Former Senate Minority Leader Paul McKinley lives in this district but decided not to seek a fourth term.

Follow me after the jump for a district map and background on the two declared candidates.

The state agency Iowa Workforce Development has replaced 36 field offices with hundreds of new “enhanced access” computer terminals this year.

Although the shuttered offices are unlikely ever to reopen, they may live on as talking points in many competitive Iowa House and Senate races next fall.

Iowa Senate Minority Leader Paul McKinley announced yesterday that he will not seek re-election in 2012 and will step down as leader of his party’s caucus when Senate Republicans meet in Des Moines on November 10. After the jump I’ve posted background on the drive to oust McKinley and thoughts about which Senate Republican will take his place next week.

McKinley’s retirement leaves Republicans without an obvious candidate in the new Senate district 14, which should be competitive in 2012. A map of this swing district is also below.

The filing deadline for statewide and state legislative offices closed at the end of business today. John Deeth has been covering the highlights at his blog. Click here to download a pdf file from the Secretary of State’s office for the full candidate list.

As I mentioned earlier, Governor Chet Culver has no primary challenger. All three remaining Republican gubernatorial candidates qualified for the ballot (Terry Branstad, Rod Roberts, Bob Vander Plaats).

There will be a three-way Democratic primary for U.S. Senate between Roxanne Conlin, Tom Fiegen and Bob Krause.

Republicans have a full slate of candidates for statewide offices. Sadly, Democrats failed to find anyone to take on Auditor David Vaudt.

Four Republicans filed against Bruce Braley in Iowa’s first Congressional district, and four Republicans filed against Dave Loebsack in the second district. All seven declared GOP candidates qualified for the ballot in Iowa’s third district. I would not be surprised if a district convention ends up selecting Leonard Boswell’s opponent.

Bill Maske is the only Democrat running against Tom Latham in Iowa’s fourth Congressional district. As expected, we will have a competitive primary in the fifth between Mike Denklau and Matt Campbell.

Most surprising statehouse district left uncontested: House district 16 in northeast Iowa. I had heard rumors that Republicans had no candidate against freshman State Representative John Beard, but I’m still shocked they left him unchallenged. That was a battleground race in 2008. Does anyone know whether a GOP district convention will be able to name a candidate for this race later?

Democrats didn’t leave any obviously competitive statehouse districts open. I’m a little disappointed we don’t have a candidate in House district 73, from which Republican Jodi Tymeson is retiring. It is a fairly strong GOP district, but I thought a candidate pounding the pavement there might help State Senator Staci Appel in her re-election campaign against Kent Sorenson (Senate district 37).

We found a candidate in House district 51 (Carroll County), which Rod Roberts is vacating to run for governor. Democrat Larry Lesle of Manning will face the winner of a three-way GOP primary.

Yesterday two-term incumbent Elesha Gayman surprised many people by announcing her retirement from House district 84 in Davenport. Gayman indicated that no one had been lined up to replace her, but today Shari Carnahan filed for that seat as a Democrat. She will face Gayman’s 2008 opponent, Ross Paustian.

Ruth Ann Gaines ended up being the only Democrat to file in Wayne Ford’s district 65 (Des Moines).

Six Democratic Iowa House incumbents have primary challengers. The people running against Dave Jacoby (district 30, Iowa City/Coralville) and Geri Huser (district 42, east side of Des Moines) appear to be backed by organized labor. A socially conservative pastor, Clair Rudison, is running against Ako Abdul-Samad in district 66 (Des Moines). Anesa Kajtazovic stepped up to the plate in House district 21 (Waterloo). Freshman Kerry Burt really should have retired from that seat. I don’t know what the deal is with Kenneth Oglesby, who is challenging Chuck Isenhart in district 27 (Dubuque). Likewise, I have no idea why Mike Petersen is running against Mary Gaskill in district 93 (Ottumwa). Please post a comment or e-mail me (desmoinesdem AT yahoo.com) if you know the backstory.

Most surprising retirement: Republican Doug Struyk in district 99. The GOP candidate for secretary of state in 2006, Mary Ann Hanusa, is running for the Council Bluffs-based seat instead. She will face Democrat Kurt Hubler, who nearly defeated Struyk in 2008. Struyk was first elected as a Democrat but switched parties several years ago. His departure will leave only one turncoat in the Iowa House. We failed to field a candidate against Dawn Pettengill (district 39), who switched to the GOP in 2007.

More posts are coming soon on some of the battleground statehouse races. Meanwhile, post any relevant comments in this thread.

UPDATE: Forgot to mention that we will see seven or eight rematches in Iowa House races. Republicans are running Josh Thurston and Stephen Burgmeier and 2009 special election winners Kirsten Running-Marquardt (district 33) and Curt Hanson (district 90). Also, in district 23 first-term Democrat Gene Ficken will face the Republican he beat in 2008, Dan Rasmussen. Republican Jane Jech is taking another shot at incumbent Mark Smith in district 43. The district 89 race may be a rematch as well if Jarad Klein wins the GOP primary to face first-term Democrat Larry Marek. In House district 60, first-term Republican Peter Cownie faces 2008 Democratic candidate Alan Koslow. Not only will Koslow be at a severe financial disadvantage, his endorsement of Jonathan Narcisse for governor won’t win him friends among the Democratic base. Democrat Pat VanZante is taking another shot at Jim Van Engelenhoven in district 71 (assuming Van Engelenhoven doesn’ lose to his GOP primary challenger). Republican Dave Heaton will face his 2008 opponent, Ron Fedler, in district 91.

SECOND UPDATE: Republicans are crowing that they are fielding candidates in 88 of the 100 Iowa House districts, while Democrats are fielding candidates in only 75 districts. I would like to challenge Republicans everywhere, but it’s only natural that Iowa Democrats are going to focus more on defense this year. We already have the majority, and it could be a tough cycle for incumbents at all levels.