It doesn't amount to much, but here's my experience from voting in Madison this morning:
It didn't take long, there weren't long lines, everything seemed in order. The polling places are obviously prepared for above normal numbers - there were probably double the usual number of booths and staff. There was a line, of maybe 6 people. Again, not much, but normally when I go in there's no one there.
I went at around 9:30 - a little later than I usually do, but I generally get there after the morning rush. I would say I would normally be around voter number 40 in an off year election; maybe as high as 100 or 125. Today I was voter number 612.
I did a little checking; in the 2009 spring election my ward (Madison #34) cast 1210 votes for supreme court; these broke 1149-61 in favor of Chief Justice Shirley Abrahamson (you may remember her as the Justice that Prosser called a bitch).
So by 9:30 am we had more than half of all votes cast in the last equivalent election, in a ward that voted 95% for the progressive woman justice the last time.
Fingers are crossed. We've put a lot of our hope into this race, meaning the stakes are significantly higher than the direct election outcome.