These are two different situations. Ohio has the rust belt appeal for trump that we've all debated and talked about quite a bit. In addition, Republicans generally do better there than nationally.
Iowa I believe was less expected to be strong for him. I don't know exactly why he's doing well out there. Over the weekend I traveled through southern Delaware (big agricultural region) and I noticed many farms with Trump signs - none for Hillary. Perhaps Trump has some appeal in the Ag industry?
Seems sort of odd since he threatened to deport a slice of their workforce (sorry), but I guess there's other factors at play here.
IF Trump wins by about 5 (not that I'm predicting that), I could see Delaware being a surprise nailbiter.
You can't be serious. Delaware has never been near that close to the national vote, and has shown 0 signs of trending Republican.
OK. Kerry won Delaware by 9 in 2004, the last time someone from Delaware was not on the ballot. That would suggest that Trump would have to win by 10-12 nationally to carry DE, but Trump is a better fit for the state than Bush, so I think an 8-point or so Trump victory could bring Delaware with it.
Trump is not a good fit for a state that is largely urban and 20% African American. Sure, he'll win Sussex county, but Republicans always do. Trump will never win in a landslide, but he would need a double digit landslide to flip Delaware, or any state that solidly Democratic.