It definitely is NOT a blue state. It has Two republican senators, a republican government and republican majorities in both state houses. Not to mention its status as a swing state and its 3/4 us house reps that are republican
The Iowa Senate is 26-24 Democratic and the Iowa House of Reps. does have a Republican majority, but it's not exactly a solid majority, either
(57-43 Republican). That's what Democrats had in 2009-2011 before it flipped, and it could just as easily flip back. On top of that, Democrats held
almost all statewide offices from 1999 - 2011, until Mr. Branstad decided 16 years as governor wasn't enough, and he needed at least 8 - 12 more years.
In addition, it voted for a Democratic president in the past 6 / 7 elections, with that one Republican win being on a <1% razor-thin margin. Depending on how you look at it, since the late 70s, it's been somewhat more Democratic at various levels than Republican.
https://en.wikipedia.org/wiki/Political_party_strength_in_Iowa