You're declaring victory over a strawman, mostly.
1) The RCP average of the scientific pre-election polling was Walker by 6.7%; no poll since February had Barrett leading. Those polls are likely to end up being extremely accurate.
12) The actual CNN exit poll was 52%-48% in favor of Walker; the only biased thing was how CNN and the media spun the exit poll results to "neck and neck." The exit polls may end up a few points off, but they won't be drastically off.
3) The final margin is not going to be anywhere close to being 60-40%. As with every election, dense urban areas take longer to count, and they lean heavily to the left. Very little of Milwaukee has been counted, for example.
That is what sort of concerns me, Milwaukee, Madison etc will be among the last to report.