This was a surprising result:

Will Shootings Like This Happen Again?
All Reps Dems Inds
Will be more violent acts 45% 41% 45% 47%
Random act/Won’t be repeated 47 55 45 45
There are partisan differences: 55% of Republicans describe the shootings in Arizona as a random act, compared to 45% of Democrats who think that.

That’s a very loud 10%.