This information comes from the Waukesha County Clerk's Office. The information is sent from the voting tabulation machine to the County Clerk directly. These are Unofficial results from the evening of the Election.
After the County completes its canvass, only State and County race results are displayed.
The certification of results for the City of Brookfield is posted in the link above. Generally speaking, these results are verified on the Friday after the election at the end of the day. They are posted the following week.