I just voted for Roughriders.
I never, ever thought that as a Grand Forks Central Redskin alum, I'd one day be voting for Red River's nickname to be that of UND's.
That said, I have always grudgingly thought 'Roughriders' was a pretty cool name. It's definitely original; I don't know of many other teams who use it other than the CFL football team. It can be shortened by fans to just 'Riders' so that's pretty cool. Plus, I bet some pretty cool logos could be created for this. Finally, "North Dakota Roughriders" flows and has a nice ring to it.