Yes, Iowa..specifically southeastern Iowa trends Liberal...while southwestern Iowa trends Conservative..of course, I’m speaking in general terms.. but I have no doubt that the Democrats have infiltrated the Republican party at the highest levels, and have done so for years. How else can we have Republican Senators and Congressmen who often consistently and reliably side with the Democrats? These Republicans sometimes..(but rarely) do admit they are “progressive”..which is virtually admitting they are on the same side as the enemy.
(For example, Mitt Romney has stated (in years previous to the last election) that he’s a Progressive..his father, George Romney; had fairly close ties with Saul Alinsky.)
Southeastern Iowa does not trend liberal.