When the Democrats decided they wanted to be the "Urban Elite Party" and paint the Republican party as the "Rural Uneducated Party", they basically threw away Iowa. Iowa is as middle class plain-folk as you can get, so they will naturally align in opposition to the Urban Elite. That was a tactical error in how the Democratic Party formed its identity.
When the Democrats decided they wanted to be the "Urban Elite Party" and paint the Republican party as the "Rural Uneducated Party", they basically threw away Iowa. Iowa is as middle class plain-folk as you can get, so they will naturally align in opposition to the Urban Elite. That was a tactical error in how the Democratic Party formed its identity.