This is actually more powerful than bad weather at keeping turnout down. Republicans are so dissatisfied with their choices for Pres., I predict the lowest Repub turnout in many years. I'm guessing about 60,000 show up.
With Kansas and Iowa State being in the Big 12 North, that could effect who shows up. Hell, my team is in the Big 12 South (Oklahoma State) and I plan on watching. With two TVs, of course.