As these discussions often do, this one has degraded into absolutes. Either Iowa forever reigns lopsidedly supreme, or they are a fading has been with ISU rising to absolute power over the state of Iowa. The truth is more grey and perhaps less exciting. ISU is making major improvements in their athletic facilities and their student enrollment on campus has grown in solid fashion...surpassing Iowa, particularly in numbers of Iowa resident students. That statistic by itself is of minimal importance, but it is also true that general improvement in ISU's athletic programs is building greater fan support throughout the state.
None of this, however, creates a paradigm shift in fan support...but it is also undeniable that ISU's fan support is growing consistently...if gradually. I don't consider this to be a zero sum game, quite frankly, but most here will likely make that assumption. I don't think Iowa is declining or being surpassed by ISU, but ISU is...finally...engaging in that battle for fan support and is doing well. There's a long road ahead to catch up to Iowa in this department, but for now simply gaining ground is significant for the ISU program.
ISU now has a well respected basketball program...and if Campbell continues to improve the football program along with ongoing facility improvements (we now have the #3 capacity stadium in the Big 12 and our attendance was 28th in the nation last season...compared to Iowa being 21st)...the ISU product is greatly enhanced. Given our on field history, we have very strong fan support in the major sports...respectively 2nd and 3rd in attendance in b-ball and f-ball in our conference
I'm an Iowa alumni but a lifelong ISU fan, and yes, I root for both teams 51 weeks out of the year. Iowa is still the lead program in the state of Iowa, but ISU is gaining SOME ground and is becoming a much stronger overall program.