In any given general election, roughly a dozen or two of the 100 Iowa House districts are in play. A first look through the list of candidates who qualified for the primary ballot suggests that this year, fewer Iowa House districts will be competitive than in 2010 or 2012. Republicans have failed to field a candidate in 32 of the 47 Democratic-held House districts. Democrats have failed to field a candidate in 26 of the 53 Republican-held House districts.

Although a few of these districts may see major-party candidates nominated through special conventions after the primary, it’s rare for late-starting candidates to have a realistic chance to beat an incumbent. (That said, two Iowa House Democrats lost in 2010 to candidates who joined the race over the summer rather than during the primary campaign.)

After the jump I’ve enclosed a full list of the Iowa House districts left unchallenged by one of the major parties. I highlighted the most surprising recruitment failures and what looks like a pattern of uncontested House seats in Senate districts that will be targeted by both parties, which may reflect a deliberate strategy. House incumbents with no fear of losing may slack off on GOTV in one half of a Senate district where every vote may count.

A future post will focus on the ten or fifteen Iowa House races likely to be most competitive this fall.

The Daily Kos Elections team has been compiling 2012 presidential election results by state legislative district as well as by Congressional district, state by state. Last week the Iowa numbers were added to the database. I took a first stab at previewing the battle for control of the Iowa Senate next year, using data including the raw vote totals and percentages for President Barack Obama and Mitt Romney in each district.

The Daily Kos database includes Obama and Romney vote totals and percentages for each Iowa House district here. After the jump I’ve incorporated that information and other factors to predict which Iowa House districts will be competitive in 2014. Writing this post has been challenging, because every election cycle brings surprises, and many more seats in the lower chamber will be in play. Unlike the Iowa Senate, where only half of the 50 members are on the ballot in each general election, all 100 Iowa House members are on ballot in every even-numbered year. Republicans currently hold a 53-47 majority in the lower chamber.