The student elections were last week at The University of Texas - congrats to Liam, et al. The focus was on Student Government but elections also included Texas Student Media, Graduate Student Assembly, and others. Overall turnout was 10,018 votes (PDF), or 20% of the student body based on Fall 2008 enrollment figures. While not yet available, the actual student body in the spring semester tends to be slightly lower than the fall due to drop-outs and transfers. Once spring enrollment data is released the estimated turnout will likely be 0.5 to 1.5 percentage points higher.
Here is a long-term graph of turnout:
It's pretty clear that 1) online voting increases turnout, 2) a larger student body tends to have lower turnout, 3) while recent turnout is relatively high, we haven't gotten close to pre-1970s turnout. Thoughts?