Yes. I voted at about 10:45. I was the 34th voter in my precinct; there was no line whatsoever, and only a couple of people in the room when I was there. I guess that's what I get for voting in a college precinct
They're doing it on campus here at UNI, in the Center for Multicultural Awareness. My department head says it's been pretty busy there. I think in Iowa you can use either your "permanent" (mama and daddy's) address, or your local address to vote, but not both.
Mister Grassley is an alumnus of UNI and the rumor is that he'll swing by for a visit.
I always voted at the college too... but with same day registration, GOTV is obviously much different here. People would literally drag students to the polls just to get them to vote... so my university always had high turnout.